1	FTB	N-{4-[1-(2-fluorobenzyl)-3-butyl-2,6-dioxo-2,3,6,7-tetrahydro-1h-purin-8-ylmethyl]-phenyl}-acetamide	1.000
2	TSX	N-[4-(1-allyl-3-butyl-2,6-dioxo-2,3,6,7-tetrahydro-1h-purin-8-ylmethyl)-phenyl]-acetamide	0.750
3	UN8	N-(4-{[3-butyl-1-(2-fluorobenzyl)-2,6-dioxo-2,3,6,7-tetrahydro-1h-purin-8-yl]methyl}phenyl)-1-methyl-1h-imidazole-4-sulfonamide	0.721