label: 4,4-dimethyl-5,5-di(1-methylethyl)-2,3,4,5-tetrahydro-1H-dipyrrolo(3,4-d-2,1-f)(1,2)azasiline-1,3-dione
label_lc: 4,4-dimethyl-5,5-di(1-methylethyl)-2,3,4,5-tetrahydro-1h-dipyrrolo(3,4-d-2,1-f)(1,2)azasiline-1,3-dione