4-Hydroxy-7-[({5-hydroxy-7-sulfo-6-[(4-(1H-1,2,3,4-tetraazol-5-yl)phenyl)diazenyl](2-naphthyl)}amino)carbonylamino]-3-[(4-(1H-1,2,3,4-tetraazol-5-yl)phenyl)diazenyl]naphthalene-2-sulfonic acid AIDS-104447 AIDS104447