IUPAC: sodium 5-carboxy-2-[(1E,3E)-5-[(2E)-5-carboxy-3,3-dimethyl-1-(4-sulfonatobutyl)-2,3-dihydro-1H-indol-2-ylidene]penta-1,3-dien-1-yl]-3,3-dimethyl-1-(4-sulfonatobutyl)-3H-indol-1-ium

SMILES: [Na+].CC1(C)\C(=C/C=C/C=C/C2=[N+](CCCCS([O-])(=O)=O)c3ccc(cc3C2(C)C)C(O)=O)N(CCCCS([O-])(=O)=O)c2ccc(cc12)C(O)=O