4-[(6-{[6-(N-{6-[(4-Carboxyphenyl)diazenyl]-5-hydroxy-7-sulfo(2-naphthyl)}carbamoyl)-4-oxopyran-2-yl]carbonylamino}-1-hydroxy-3-sulfo-2-naphthyl)diazenyl]benzoic acid AIDS-104434 AIDS104434