Synonyms: 2-((E)-2-[3-[(E)-2-(3,3-DIMETHYL-1-PHENYL-1,3-DIHYDRO-2H-INDOL-2-YLIDENE)ETHYLIDENE]-2-(1-NAPHTHYL)-1-CYCLOPENTEN-1-YL]ETHENYL)-3,3-DIMETHYL-1-PHENYL-3H-INDOLIUM PERCHLORATE;3H-INDOLIUM, 2-[2-[3-[(1,3-DIHYDRO-3,3-DIMETHYL-1-PHENYL-2H-INDOL-2-YLIDENE)ETHYLIDENE]-2-(1-NAPHTHALENYL)-1-CYCLOPENTEN-1-YL]ETHENYL]-3,3-DIMETHYL-1-PHENYL-, PERCHLORATE