Product Name:2-[3-[1-[6-(2,5-dioxopyrrolidin-1-yl)oxy-6-oxohexyl]-3,3-dimethyl-5-sulfoindol-1-ium-2-yl]prop-2-enylidene]-1-ethyl-3,3-dimethylindole-5-sulfonate
IUPAC Name:1-{6-[(2,5-dioxopyrrolidin-1-yl)oxy]-6-oxohexyl}-2-[(1E)-3-[(2Z)-1-ethyl-3,3-dimethyl-5-sulfonato-2,3-dihydro-1H-indol-2-ylidene]prop-1-en-1-yl]-3,3-dimethyl-5-sulfo-3H-indol-1-ium