label: (1-methyl-11C)-3-(1-(6,7-dimethoxyquinazolin-4-yl)piperidin-4-yl)-1,6-dimethyl-2,4(1H,3H)-quinazolinedione
label_lc: (1-methyl-11c)-3-(1-(6,7-dimethoxyquinazolin-4-yl)piperidin-4-yl)-1,6-dimethyl-2,4(1h,3h)-quinazolinedione