1	CKP	6-O-phosphono-beta-D-psicofuranosonic acid	1.000
2	F6P	6-O-phosphono-beta-D-fructofuranose	0.941
3	P6P	6-O-phosphono-alpha-D-fructofuranose	0.941
4	TA6	6-O-phosphono-beta-D-tagatofuranose	0.941
5	F1X	1-O-phosphono-beta-D-fructofuranose	0.833
6	ABF	5-O-phosphono-beta-D-arabinofuranose	0.824
7	HSX	5-O-phosphono-alpha-D-ribofuranose	0.824
8	RP5	5-O-phosphono-beta-D-ribofuranose	0.824
9	63T	[(2r,3s)-3-hydroxy-5-oxotetrahydrofuran-2-yl]methyl dihydrogen phosphate (non-preferred name)	0.765
10	AAB	2'-deoxy-ribofuranose-5'-monophosphate	0.765
11	ORP	2-deoxy-5-phosphono-ribose	0.765
12	RP3	3-deoxy-5-O-phosphono-beta-D-ribofuranose	0.765
13	50A	2-deoxy-2-fluoro-5-O-phosphono-alpha-D-ribofuranose	0.722
14	GRF	5-O-phosphono-beta-D-ribofuranosylamine	0.722
15	RF5	2-deoxy-2-fluoro-5-O-phosphono-alpha-D-arabinofuranose	0.722
16	X4A	[(2r,3s,5s)-2,3,5-trihydroxytetrahydrofuran-2-yl]methyl dihydrogen phosphate	0.722
17	1X4	2,3-dideoxy-5-O-phosphono-alpha-D-ribofuranose	0.706
18	3DR	1',2'-dideoxyribofuranose-5'-phosphate	0.706
19	DDX	2',3'-dehydro-2',3'-dideoxyribofuranose-5'-phosphate	0.706
20	DN	Unknown 2'-deoxynucleotide	0.706