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