[(2R,3S,4R,5R)-5-(2,6-dioxo-3H-purin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl phosphate
[(2R,3S,4R,5R)-5-(2,6-dioxo-3H-purin-9-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methyl phosphate
[(2R,3S,4R,5R)-5-(2,6-dioxo-3H-purin-9-yl)-3,4-dihydroxy-2-tetrahydrofuranyl]methyl phosphate
[(2R,3S,4R,5R)-5-(2,6-diketo-3H-purin-9-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methyl phosphate
[(2R,3S,4R,5R)-5-(2,6-dioxo-3H-purin-9-yl)-3,4-dihydroxy-oxolan-2-yl]methyl phosphate