isopropyl [2-(4,6-dimethyl-2-oxo-3a,6a-diphenyl-5-thioxooctahydroimidazo[4,5-d]imidazol-1-yl)-1-oxoethylamino]acetate
N,N-dimethylthiourea
benzil
1,3-diethyl-5,5-diphenyl-2-thioxoimidazolidin-4-one
isopropyl [2-(4,6-diethyl-2-oxo-3a,6a-diphenyl-5-thioxooctahydroimidazo[4,5-d]imidazol-1-yl)-1-oxoethylamino]acetate