IUPAC:2-[(1E,3E,5E)-7-[(2E)-3-(5-carboxypentyl)-1,1-dimethyl-6,8-disulfo-1H,2H,3H-benzo[e]indol-2-ylidene]hepta-1,3,5-trien-1-yl]-3-ethyl-1,1-dimethyl-6-sulfo-1H-benzo[e]indol-3-ium-8-sulfonate
IUPAC:2-[(1E,3E,5E)-7-[(2E)-3-(5-carboxypentyl)-1,1-dimethyl-6,8-disulfo-1H,2H,3H-benzo[e]indol-2-ylidene]hepta-1,3,5-trien-1-yl]-3-ethyl-1,1-dimethyl-6-sulfo-1H-benzo[e]indol-3-ium-8-sulfonate