2-(4-{[6-({4-[N-(6-{[4-(Carboxymethyl)phenyl]diazenyl}-5-hydroxy-7-sulfo(2-naphthyl))carbamoyl]phenyl}carbonylamino)-1-hydroxy-3-sulfo-2-naphthyl]diazenyl}phenyl)acetic acid AIDS-104451 AIDS104451