1-BUTYL-2-[2-[3-[(1-BUTYL-6-CHLOROBENZ[CD]INDOL-2(1H)-YLIDENE)ETHYLIDENE]-2-CHLORO-1-CYCLOHEXEN-1-YL]ETHENYL]-6-CHLOROBENZ[CD]INDOLIUM TETRAFLUOROBORATE [ 155613-98-2 ]