label: ((2-(dimethylamino)ethyl)amino)-5-imino-1,3,6-triphenyl-5,6-dihydropyrimido(4,5-d)pyrimidine-2,4(1H,3H)-dithione
label_lc: ((2-(dimethylamino)ethyl)amino)-5-imino-1,3,6-triphenyl-5,6-dihydropyrimido(4,5-d)pyrimidine-2,4(1h,3h)-dithione