label: 2-({8-[(3R)-3-aminopiperidin-1-yl]-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl}methyl)benzonitrile
label_lc: 2-({8-[(3r)-3-aminopiperidin-1-yl]-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7h-purin-7-yl}methyl)benzonitrile