[3-(2,6-dioxo-1,3-dipropyl-7H-purin-8-yl)cyclopentyl] 3-fluorosulfonylbenzoate
3-fluorosulfonylbenzoic acid [3-(2,6-dioxo-1,3-dipropyl-7H-purin-8-yl)cyclopentyl] ester
3-fluorosulfonylbenzoic acid [3-(2,6-diketo-1,3-dipropyl-7H-purin-8-yl)cyclopentyl] ester