2-((1E,3E,5E,7E)-7-(3-(5-Carboxypentyl)-1,1-dimethyl-1,3-dihydro-2H-benzo[e]indol-2-ylidene)hepta-1,3,5-trien-1-yl)-1,1-dimethyl-3-(4-sulfobutyl)-1H-benzo[e]indol-3-ium (triethylammonium)

2-((1E,3E,5E,7E)-7-(3-(5-Carboxypentyl)-1,1-dimethyl-1,3-dihydro-2H-benzo[e]indol-2-ylidene)hepta-1,3,5-trien-1-yl)-1,1-dimethyl-3-(4-sulfobutyl)-1H-benzo[e]indol-3-ium (triethylammonium)