IUPAC:2-[3-(3-{6-[(2,5-dioxopyrrolidin-1-yl)oxy]-6-oxohexyl}-1,1-dimethyl-6,8-disulfo-1H,2H,3H-benzo[e]indol-2-ylidene)prop-1-en-1-yl]-3-ethyl-1,1-dimethyl-8-sulfo-1H-benzo[e]indol-3-ium-6-sulfonate
IUPAC:2-[3-(3-{6-[(2,5-dioxopyrrolidin-1-yl)oxy]-6-oxohexyl}-1,1-dimethyl-6,8-disulfo-1H,2H,3H-benzo[e]indol-2-ylidene)prop-1-en-1-yl]-3-ethyl-1,1-dimethyl-8-sulfo-1H-benzo[e]indol-3-ium-6-sulfonate