1	PRF	7-deaza-7-aminomethyl-guanine	1.000
2	GD1	2-amino-5-[(z)-iminomethyl]-3,7-dihydro-4h-pyrrolo[2,3-D]pyrimidin-4-one	1.000
3	HNG	2-amino-5-(aminomethyl)-1,7-dihydro-4h-pyrrolo[2,3-D]pyrimidin-4-one	1.000
4	PQ0	2-amino-4-oxo-4,7-dihydro-3h-pyrrolo[2,3-D]pyrimidine-5-carbonitrile	1.000
5	JU2	2-amino-6-bromo-4-oxo-4,7-dihydro-3h-pyrrolo[2,3-D]pyrimidine-5-carbonitrile	0.929
6	FDB	2-amino-5-methyl-3h-pyrrolo[2,3-D]pyrimidin-4(7h)-one	0.923
7	7DG	7-deazaguanine	0.846
8	QY8	2-amino-3h,4h,7h-pyrrolo[2,3-D]pyrimidin-4-one	0.846
9	2KA	2-amino-4-oxo-4,7-dihydro-3h-pyrrolo[2,3-D]pyrimidine-5-carboxylic acid	0.800
10	7HX	7h-pyrrolo[2,3-D]pyrimidin-4-ol	0.769
11	44V	(6s)-2-amino-6-methyl-5,6,7,8-tetrahydropteridin-4(3h)-one	0.733
12	44W	2-amino-6-methyl-7,8-dihydropteridin-4(3h)-one	0.733
13	B62	(6r)-2-amino-6-methyl-5,6,7,8-tetrahydropteridin-4(3h)-one	0.733
14	JSO	2-azanyl-6-methyl-3~{H}-pteridin-4-one	0.733
15	XHP	2-amino-6-methylidene-6,7-dihydropteridin-4(3h)-one	0.733
16	42A	1h-pyrrolo[2,3-B]pyridine-3-carbonitrile	0.714
17	GUN	Guanine	0.714
18	KBQ	2-sulfanylidene-1,7-dihydropyrrolo[2,3-D]pyrimidin-4-one	0.714