1	X0T	7-[(2s)-2,3-dihydroxypropyl]-1,3-dimethyl-3,7-dihydro-1h-purine-2,6-dione	1.000
2	A1BD2	Dyphylline	1.000
3	E7R	1,3-dimethyl-7-propyl-purine-2,6-dione	0.889
4	7UM	3-methyl-7-propyl-purine-2,6-dione	0.833
5	A1IOQ	7-(2-chloroethyl)-1,3-dimethyl-purine-2,6-dione	0.789
6	CFF	Caffeine	0.778
7	M1D	4-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7h-purin-7-yl)butanoic acid	0.762
8	EXU	1,3,7-trimethyl-9h-purine-2,6,8-trione	0.737
9	37T	Theobromine	0.722
10	TEP	Theophylline	0.722
11	M0V	7-[(2s)-2-hydroxy-3-(morpholin-4-yl)propyl]-1,3-dimethyl-3,7-dihydro-1h-purine-2,6-dione	0.708