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