IUPAC:disodium 2-[(1E,3E,5E)-7-[(2Z)-3-(5-carboxypentyl)-1,1-dimethyl-7-sulfonato-1H,2H,3H-benzo[e]indol-2-ylidene]hepta-1,3,5-trien-1-yl]-1,1-dimethyl-3-(4-sulfonatobutyl)-1H-benzo[e]indol-3-ium-7-sulfonate
IUPAC:disodium 2-[(1E,3E,5E)-7-[(2Z)-3-(5-carboxypentyl)-1,1-dimethyl-7-sulfonato-1H,2H,3H-benzo[e]indol-2-ylidene]hepta-1,3,5-trien-1-yl]-1,1-dimethyl-3-(4-sulfonatobutyl)-1H-benzo[e]indol-3-ium-7-sulfonate