1	MOG	5-amino-2-methyl-6h-oxazolo[5,4-D]pyrimidin-7-one	1.000
2	A1LXN	2-azanyl-8-methyl-1,9-dihydropurin-6-one	0.846
3	44V	(6s)-2-amino-6-methyl-5,6,7,8-tetrahydropteridin-4(3h)-one	0.786
4	44W	2-amino-6-methyl-7,8-dihydropteridin-4(3h)-one	0.786
5	B62	(6r)-2-amino-6-methyl-5,6,7,8-tetrahydropteridin-4(3h)-one	0.786
6	JSO	2-azanyl-6-methyl-3~{H}-pteridin-4-one	0.786
7	XHP	2-amino-6-methylidene-6,7-dihydropteridin-4(3h)-one	0.786
8	9DG	9-deazaguanine	0.769
9	GUN	Guanine	0.769
10	6FP	2-amino-4-oxo-3,4-dihydropteridine-6-carbaldehyde	0.733
11	HHR	6-hydroxymethylpterin	0.733
12	PH2	2-amino-6-hydroxymethyl-7,8-dihydro-3h-pteridin-4-one	0.733
13	ZZZ	6-formyltetrahydropterin	0.733
14	8IG	8-iodo-guanine	0.714
15	9MG	9-methylguanine	0.714
16	A1IBK	2-azanyl-8-methyl-3,7-dihydropurine-6-thione	0.714
17	ANG	8-aminoguanine	0.714
18	B55	2-amino-8-sulfanyl-1,9-dihydro-6h-purin-6-one	0.714
19	BRG	8-bromoguanine	0.714
20	MY6	2-amino-7-methyl-1,7-dihydro-6h-purin-6-one	0.714
21	OXG	8-oxoguanine	0.714
22	PE0	Pterine	0.714
23	QBK	5-azanyl-[1,3]thiazolo[5,4-D]pyrimidine-2,7-dione	0.714