1	29G	Pyrimido[4,5-D]pyrimidine-2,4-diamine	1.000
2	29H	2-aminopyrimido[4,5-D]pyrimidin-4(3h)-one	0.846
3	6AP	9h-purine-2,6-diamine	0.769
4	3WA	4-aminopyrido[2,3-D]pyrimidin-5(8h)-one	0.714
5	T0A	5-deazatetrahydropterin	0.714
6	W5M	9-methyl-9h-purine-2,6-diamine	0.714