IUPAC:2-[5-(3,3-dimethyl-1-{5-[(prop-2-yn-1-yl)carbamoyl]pentyl}-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:2-[5-(3,3-dimethyl-1-{5-[(prop-2-yn-1-yl)carbamoyl]pentyl}-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