IUPAC:potassium 2-[(1E,3E)-5-[(2E)-1-(5-{[2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)ethyl]carbamoyl}pentyl)-3,3-dimethyl-5-sulfonato-2,3-dihydro-1H-indol-2-ylidene]penta-1,3-dien-1-yl]-1,3,3-trimethyl-3H-indol-1-ium-5-sulfonate
IUPAC:potassium 2-[(1E,3E)-5-[(2E)-1-(5-{[2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)ethyl]carbamoyl}pentyl)-3,3-dimethyl-5-sulfonato-2,3-dihydro-1H-indol-2-ylidene]penta-1,3-dien-1-yl]-1,3,3-trimethyl-3H-indol-1-ium-5-sulfonate