4-{4-[(6-{[N-(6-{[4-(3-Carboxypropyl)phenyl]diazenyl}-5-hydroxy-7-sulfo(2-naphthyl))carbamoyl]carbonylamino}-1-hydroxy-3-sulfo-2-naphthyl)diazenyl]phenyl}butanoic acid AIDS-104497 AIDS104497