4-({6-[(N-{6-[(4-Carboxy-2-chloro-5-methoxyphenyl)diazenyl]-5-hydroxy-7-sulfo(2-naphthyl)}carbamoyl)carbonylamino]-1-hydroxy-3-sulfo(2-naphthyl)}diazenyl)-5-chloro-2-methoxybenzoic acid AIDS-104502 AIDS104502