3-[(5,6-Dimethylbenzimidazol-2-yl)diazenyl]-7-{[4-(N-{6-[(5,6-dimethylbenzimidazol-2-yl)diazenyl]-5-hydroxy-7-sulfo(2-naphthyl)}carbamoyl)phenyl]carbonylamino}-4-hydroxynaphthalene-2-sulfonic acid AIDS-104470 AIDS104470