IUPAC:2-[(1E,3E,5E)-7-[(2Z)-3,3-dimethyl-1-{5-[(prop-2-yn-1-yl)carbamoyl]pentyl}-5-sulfo-2,3-dihydro-1H-indol-2-ylidene]hepta-1,3,5-trien-1-yl]-1-ethyl-3,3-dimethyl-3H-indol-1-ium-5-sulfonate
IUPAC:2-[(1E,3E,5E)-7-[(2Z)-3,3-dimethyl-1-{5-[(prop-2-yn-1-yl)carbamoyl]pentyl}-5-sulfo-2,3-dihydro-1H-indol-2-ylidene]hepta-1,3,5-trien-1-yl]-1-ethyl-3,3-dimethyl-3H-indol-1-ium-5-sulfonate