C.I.73390;Helindon Red B;C.I.Pigment Red 198;Thiosafast Red MV-6604;4,4'-Dichloro-7,7'-dimethyl-Δ2,2'(3H,3'H)-bibenzo[b]thiophene-3,3'-dione;4,4'-dichloro-7,7'-dimethyl-[2,2']bi[benzo[b]thiophenylidene]-3,3'-dione;Benzo[b]thiophen-3(2H)-one, 4-chloro-2-(4-chloro-7-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-7-methyl-