IUPAC:2-{7-[1,1-dimethyl-3-(4-sulfonatobutyl)-1H,2H,3H-benzo[e]indol-2-ylidene]hepta-1,3,5-trien-1-yl}-3-{6-[(2,5-dioxopyrrolidin-1-yl)oxy]-6-oxohexyl}-1,1-dimethyl-1H-benzo[e]indol-3-ium
IUPAC:2-{7-[1,1-dimethyl-3-(4-sulfonatobutyl)-1H,2H,3H-benzo[e]indol-2-ylidene]hepta-1,3,5-trien-1-yl}-3-{6-[(2,5-dioxopyrrolidin-1-yl)oxy]-6-oxohexyl}-1,1-dimethyl-1H-benzo[e]indol-3-ium