IUPAC:tripotassium 2-[(1E,3E)-5-[(2Z)-3,3-dimethyl-5-sulfonato-1-(3-sulfonatopropyl)-2,3-dihydro-1H-indol-2-ylidene]penta-1,3-dien-1-yl]-3-{6-[(2,5-dioxopyrrolidin-1-yl)oxy]-6-oxohexyl}-3-methyl-1-(3-sulfonatopropyl)-3H-indol-1-ium-5-sulfonate
IUPAC:tripotassium 2-[(1E,3E)-5-[(2Z)-3,3-dimethyl-5-sulfonato-1-(3-sulfonatopropyl)-2,3-dihydro-1H-indol-2-ylidene]penta-1,3-dien-1-yl]-3-{6-[(2,5-dioxopyrrolidin-1-yl)oxy]-6-oxohexyl}-3-methyl-1-(3-sulfonatopropyl)-3H-indol-1-ium-5-sulfonate