3-Pyridinecarboxamide, N-(4-(1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-7H-purin-7-yl)butyl)- 70454-28-3 N-(4-(1,2,3,6-Tetrahydro-1,3-dimethyl-2,6-dioxo-7H-purin-7-yl)butyl)-3-pyridinecarboxamide