English alias:4,8-bis(dicyanomethylene)-4,8-dihydrobenzo<1,2-b:4,5-b'>dithiophene;(Benzo[1,2-b:4,5-b']dithiophene-4,8-diylidene)dimalononitrile;Propanedinitrile, 2,2'-benzo[1,2-b:4,5-b']dithiophene-4,8-diylidenebis-;2-[4-(Dicyanomethylidene)thieno[2,3-f][1]benzothiol-8-ylidene]propanedinitrile