(E)-5,6-bis(4-chlorophenyl)-2-(1,2-diphenyl-2-thioxoethylidene)-4H-1,3-dithiin-4-one

(Z)-5,6-bis(4-chlorophenyl)-2-(1,2-diphenyl-2-thioxoethylidene)-4H-1,3-dithiin-4-one