2,3,6,7-Tetrahydro-3,7-dimethyl-2,6-dioxo-1H-purine-1-butanoic Acid; 3,6-Dihydro-3,7-dimethyl-2,6-dioxopurine-1(2H)-butyric Acid
2,3,6,7-Tetrahydro-3,7-dimethyl-2,6-dioxo-1H-purine-1-butanoic Acid; 3,6-Dihydro-3,7-dimethyl-2,6-dioxopurine-1(2H)-butyric Acid