IUPAC:2-{5-[3,3-dimethyl-5-sulfo-1-(3-sulfopropyl)-2,3-dihydro-1H-indol-2-ylidene]penta-1,3-dien-1-yl}-3-{5-[(2,5-dioxopyrrolidin-1-yl)oxy]-5-oxopentyl}-3-methyl-5-sulfo-1-(3-sulfonatopropyl)-3H-indol-1-ium
IUPAC:2-{5-[3,3-dimethyl-5-sulfo-1-(3-sulfopropyl)-2,3-dihydro-1H-indol-2-ylidene]penta-1,3-dien-1-yl}-3-{5-[(2,5-dioxopyrrolidin-1-yl)oxy]-5-oxopentyl}-3-methyl-5-sulfo-1-(3-sulfonatopropyl)-3H-indol-1-ium