1	6FC	2'-trifluoromethylthio-2'-deoxycytidine	1.000
2	6FU	2'-trifluoromethylthio-2'-deoxyuridine	0.923
3	USM	2'-S-methyl-2'-thiouridine 5'-(dihydrogen phosphate)	0.808
4	0DC	2'-deoxy-L-ribo-furanosyl cytosine-5'-monophosphate	0.800
5	DC	2'-deoxycytidine-5'-monophosphate	0.800
6	DCM	2'-deoxycytidine-5'-monophosphate	0.800
7	DNR	2'-deoxy-n3-protonated cytidine-5'-monophosphate	0.800
8	IY9	[5-(4-azanyl-2-oxidanylidene-pyrimidin-1-yl)-3-oxidanyl-furan-2-yl]methyl dihydrogen phosphate	0.800
9	XC	[(2~{R},3~{R},5~{R})-5-(6-azanyl-2-oxidanylidene-4,5-dihydropyrimidin-3-yl)-3-oxidanyl-oxolan-2-yl]methyl dihydrogen phosphate	0.800
10	0C	L-cytidine-5'-monophosphate	0.769
11	2GF	[(2r,5r)-5-(4-amino-5-chloro-2-oxopyrimidin-1(2h)-yl)-3-oxotetrahydrofuran-2-yl]methyl dihydrogen phosphate	0.769
12	4U3	5-chloro-2'-deoxycytidine 5'-(dihydrogen phosphate)	0.769
13	5CM	5-methyl-2'-deoxy-cytidine-5'-monophosphate	0.769
14	5OC	2'-deoxy-5-hydroxycytidine 5'-(dihydrogen phosphate)	0.769
15	8XC	4-amino-1-(5-O-phosphono-beta-D-xylofuranosyl)pyrimidin-2(1h)-one	0.769
16	A5M	2'-amine-cytidine-5'-monophosphate	0.769
17	C	Cytidine-5'-monophosphate	0.769
18	C37	5-fluoro-2'-deoxy-cytidine-5'-monophosphate	0.769
19	C38	5-iodo-2'-deoxy-cytidine-5'-monophosphate	0.769
20	C5P	Cytidine-5'-monophosphate	0.769
21	CAR	Cytosine arabinose-5'-phosphate	0.769
22	CBR	5-bromo-2'-deoxy-cytidine-5'-monophosphate	0.769
23	CFL	4-amino-1-(2-deoxy-2-fluoro-5-O-phosphono-beta-D-arabinofuranosyl)pyrimidin-2(1h)-one	0.769
24	CFZ	2'-deoxy-2'-fluorocytidine 5'-(dihydrogen phosphate)	0.769
25	CH	N3-protonated cytidine-5'-monophosphate	0.769
26	IY0	[5-(4-azanyl-2-oxidanylidene-pyrimidin-1-yl)-3,4-bis(oxidanyl)furan-2-yl]methyl dihydrogen phosphate	0.769
27	ME6	[(2r,3s,5r)-5-(4-azanyl-3-methyl-2-oxo-pyrimidin-3-ium-1-yl)-3-hydroxy-oxolan-2-yl]methyl dihydrogen phosphate	0.769
28	OFC	4-amino-1-(2-deoxy-2-fluoro-5-O-phosphono-beta-L-ribofuranosyl)pyrimidin-2(1h)-one	0.769
29	RY	5'-3,6-dihydrocytidylic acid	0.769
30	U48	5-methyl-2'-deoxy-n3-protonated cytidine-5'-monophosphate	0.769
31	DOC	2',3'-dideoxycytidine-5'-monophosphate	0.760
32	Z	1-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)pyrimidin-2(1h)-one	0.760
33	10C	4-amino-1-{2,5-anhydro-4-[(phosphonooxy)methyl]-alpha-L-lyxofuranosyl}pyrimidin-2(1h)-one	0.741
34	5CF	5-fluorocytidine 5'-(dihydrogen phosphate)	0.741
35	5FC	5-formyl-2'-deoxy-cytidine-5'-monophosphate	0.741
36	5HC	2'-deoxy-5-(hydroxymethyl)cytidine 5'-(dihydrogen phosphate)	0.741
37	5IC	5-iodo-cytidine-5'-monophosphate	0.741
38	5MC	5-methylcytidine-5'-monophosphate	0.741
39	5SE	2'-deoxy-5-(methylselanyl)cytidine 5'-(dihydrogen phosphate)	0.741
40	B8Q	3-methyl, cytidine-5'-monophosphate	0.741
41	CBV	5-bromocytidine 5'-(dihydrogen phosphate)	0.741
42	CSL	(D)-2'-methylselenyl-2'-deoxycytidine-5'-phosphate	0.741
43	JMH	3-methylcytidine- 5'-monophosphate	0.741
44	MDQ	2'-deoxy-3-(oxidomethyl)cytidine 5'-(dihydrogen phosphate)	0.741
45	OMC	O2'-methylycytidine-5'-monophosphate	0.741
46	TKW	5-hydroxycytidine 5'-(dihydrogen phosphate)	0.741
47	U7B	2'-deoxy-2'2'-difluorodeoxycytidine	0.741
48	XE6	4-amino-1-(2-O-methyl-5-O-phosphono-beta-L-ribofuranosyl)pyrimidin-2(1h)-one	0.741
49	3KA	1-(2-deoxy-5-O-phosphono-beta-L-erythro-pentofuranosyl)pyrimidine-2,4(1h,3h)-dione	0.731
50	5NC	5-aza-cytidine-5'monophosphate	0.731
51	5PY	1-(2'-deoxy-5'-O-phosphono-beta-D-erythro-pentofuranosyl)-5-methylpyrimidin-2(1h)-one	0.731
52	9L3	[(2r,3s,5r)-5-(4-azanyl-5-methyl-pyrimidin-1-ium-1-yl)-3-oxidanyl-oxolan-2-yl]methyl dihydrogen phosphate	0.731
53	C42	3'-amino-2'-deoxy-cytidine-5'-monophosphate	0.731
54	C4S	2'-deoxy-4'-thiocytidine 5'-(dihydrogen phosphate)	0.731
55	C7R	2'-deoxy-5'-O-thiophosphonocytidine	0.731
56	C7S	2'-deoxy-5'-O-thiophosphonocytidine	0.731
57	CMR	2'-deoxy-cytidine-5'-rp-monomethylphosphonate	0.731
58	DDN	3,4-dihydro-2'-deoxyuridine-5'-monophosphate	0.731
59	DU	2'-deoxyuridine-5'-monophosphate	0.731
60	O2C	3'-deoxy-cytidine-5'-monophosphate	0.731
61	PYO	1-(beta-D-ribofuranosyl)-pyrimidin-2-one-5'-phosphate	0.731
62	SC	2-deoxy-cytidine-5'-thiophosphorate	0.731
63	UMC	2'-deoxy-5'-uridylic acid	0.731
64	UMP	2'-deoxyuridine 5'-monophosphate	0.731
65	1CC	5-carboxy-2'-deoxycytidine monophosphate	0.714
66	5HM	5-(hydroxymethyl)cytidine 5'-(dihydrogen phosphate)	0.714
67	5PC	5(1-propynyl)-2'-deoxycytidine-5'-monophosphate	0.714
68	C36	5-methyl-5-fluoro-2'-deoxy-cytidine-5'-monophosphate	0.714
69	C49	4-thio,5-fluoro,5-methyl-2'-deoxy-cytidine-5'-monophosphate	0.714
70	E3C	3-ethyl, cytidine-5'-monophosphate	0.714
71	EIX	[(2r,3s,5s)-5-[(4r,5r)-6-azanyl-5-fluoranyl-5-methyl-2-oxidanylidene-4-sulfanyl-4h-pyrimidin-3-yl]-3-oxidanyl-oxolan-2-yl]methyl dihydrogen phosphate	0.714
72	JMC	[(2~{R},3~{R},4~{R},5~{R})-5-(4-azanyl-3-methyl-2-oxidanylidene-4~{H}-pyrimidin-1-yl)-4-methoxy-3-oxidanyl-oxolan-2-yl]methyl dihydrogen phosphate	0.714
73	KEA	2'-azido-2'-deoxycytidine 5'-(dihydrogen phosphate)	0.714
74	LCC	[(1r,3r,4r,7s)-7-hydroxy-3-(5-methylcytosin-1-yl)-2,5-dioxabicyclo[2.2.1]hept-1-yl]methyl dihydrogen phosphate	0.714
75	MMX	3-ethyl-3,4,5,6-tetrahydrocytidine 5'-(dihydrogen phosphate)	0.714
76	RSQ	5-formylcytidine 5'-(dihydrogen phosphate)	0.714
77	XFC	4-amino-1-(2-deoxy-2-fluoro-5-O-phosphono-beta-D-arabinofuranosyl)-2-oxo-1,2-dihydropyrimidine-5-carbaldehyde	0.714
78	0DT	2'-deoxy-L-ribo-furanosyl thymidine-5'-monophosphate	0.704
79	0U	L-uridine-5'-monophosphate	0.704
80	1SC	5'-O-thiophosphonocytidine	0.704
81	2AU	2'-aminouridine	0.704
82	4SC	2'-deoxy-5-methyl-4'-thiocytidine 5'-(dihydrogen phosphate)	0.704
83	4SU	4-thiouridine-5'-monophosphate	0.704
84	5IU	5-iodo-2'-deoxyuridine-5'-monophosphate	0.704
85	6HC	1',5'-anhydro-2',3'-dideoxy-2'-(cytosin-1-yl)-6'-O-phosphoryl-D-arabino-hexitol	0.704
86	7K8	[(2~{R},3~{S},5~{R})-5-[(4~{E})-4-hydroxyimino-2-oxidanylidene-1,3-diazinan-1-yl]-3-oxidanyl-oxolan-2-yl]methyl dihydrogen phosphate	0.704
87	8XU	1-(5-O-phosphono-beta-D-xylofuranosyl)pyrimidine-2,4(1h,3h)-dione	0.704
88	BRU	5-bromo-2'-deoxyuridine-5'-monophosphate	0.704
89	C34	N4-methyl-2'-deoxy-cytidine-5'-monophosphate	0.704
90	DT	Thymidine-5'-monophosphate	0.704
91	EW3	[(2~{R},3~{R},4~{R},5~{R})-5-[2,4-bis(oxidanylidene)-1,3-diazinan-1-yl]-4-fluoranyl-3-oxidanyl-oxolan-2-yl]methyl dihydrogen phosphate	0.704
92	H2U	5,6-dihydrouridine-5'-monophosphate	0.704
93	IKS	[(2~{R},3~{S},4~{R},5~{R})-5-(4-azanyl-2-oxidanylidene-pyrimidin-1-yl)-3,4-bis(oxidanyl)selenolan-2-yl]methyl dihydrogen phosphate	0.704
94	MDK	4-amino-1-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)-3-methylpyridin-2(1h)-one	0.704
95	NOH	2'-deoxy-N-hydroxycytidine 5'-(dihydrogen phosphate)	0.704
96	OHU	2'-deoxy-5-hydroxyuridine 5'-(dihydrogen phosphate)	0.704
97	OKN	5'-methyl-2'-deoxycytidine-5'-phosphorothioate	0.704
98	PBT	[3-hydroxy-5-(5-methyl-2,4-dioxotetrahydro-1(2h)-pyrimidinyl)tetrahydro-2-furanyl]methyl dihydrogen phosphate	0.704
99	QBT	[(2r,3s,5r)-3-hydroxy-5-[(5s)-5-methyl-2,4-dioxo-1,3-diazinan-1-yl]oxolan-2-yl]methyl dihydrogen phosphate	0.704
100	RSP	4-amino-1-(5-O-phosphono-beta-D-ribofuranosyl)pyrimidine-2(1h)-thione	0.704
101	S4C	4'-thio-4'-deoxy-cytosine-5'-monophosphate	0.704
102	T4S	1-(2-deoxy-5-O-phosphono-beta-D-erythro-pentofuranosyl)-4-hydroseleno-5-methylpyrimidin-2(1h)-one	0.704
103	TJU	[(2~{R},3~{S},5~{R})-5-(4-azanyl-3-methyl-6-oxidanylidene-2~{H}-1,3,5-triazin-1-yl)-3-oxidanyl-oxolan-2-yl]methyl dihydrogen phosphite	0.704
104	TMP	Thymidine-5'-phosphate	0.704
105	TTI	2'-deoxy-5-telluroxouridine 5'-(dihydrogen phosphate)	0.704
106	U	Uridine-5'-monophosphate	0.704
107	U5P	Uridine-5'-monophosphate	0.704
108	UAR	Uracil arabinose-5'-phosphate	0.704
109	UCL	5-chloro-2'-deoxyuridine 5'-(dihydrogen phosphate)	0.704
110	UF2	1-(2-deoxy-2-fluoro-5-O-phosphono-beta-D-arabinofuranosyl)pyrimidine-2,4(1h,3h)-dione	0.704
111	UFP	5-fluoro-2'-deoxyuridine-5'-monophosphate	0.704
112	UFT	2'-deoxy-2'-fluorouridine 5'-(dihydrogen phosphate)	0.704
113	US5	1-(5-O-phosphono-beta-D-ribofuranosyl)-4-selanylpyrimidin-2(1h)-one	0.704
114	XCL	[(1s,4r,6r)-6-hydroxy-4-(cytosin-9-yl)cyclohex-2-en-1-yl]methyl dihydrogen phosphate	0.704
115	XCR	[(1r,4s,6s)-4-(4-amino-2-oxopyrimidin-1(2h)-yl)-6-hydroxycyclohex-2-en-1-yl]methyl dihydrogen phosphate	0.704
116	XCT	4-amino-1-(2,3-dideoxy-6-O-phosphono-beta-D-erythro-hexopyranosyl)pyrimidin-2(1h)-one	0.704