1	M1D	4-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7h-purin-7-yl)butanoic acid	1.000
2	E7R	1,3-dimethyl-7-propyl-purine-2,6-dione	0.842
3	7UM	3-methyl-7-propyl-purine-2,6-dione	0.789
4	X0T	7-[(2s)-2,3-dihydroxypropyl]-1,3-dimethyl-3,7-dihydro-1h-purine-2,6-dione	0.762
5	CFF	Caffeine	0.737
6	J6F	7-hexyl-3-methyl-8-sulfanylidene-9h-purine-2,6-dione	0.727
7	EXU	1,3,7-trimethyl-9h-purine-2,6,8-trione	0.700