IUPAC:2-[5-(1-{6-[(2,5-dioxopyrrolidin-1-yl)oxy]-6-oxohexyl}-3,3-dimethyl-2,3-dihydro-1H-indol-2-ylidene)penta-1,3-dien-1-yl]-1-ethyl-3,3-dimethyl-3H-indol-1-ium chloride
IUPAC:2-[5-(1-{6-[(2,5-dioxopyrrolidin-1-yl)oxy]-6-oxohexyl}-3,3-dimethyl-2,3-dihydro-1H-indol-2-ylidene)penta-1,3-dien-1-yl]-1-ethyl-3,3-dimethyl-3H-indol-1-ium chloride