4,4'-Bis((5-arsono-2,4-dihydroxyphenyl)diazenyl)-1,1'-biphenyl 5-((4'-((5-Arsono-2,4-dihydroxyphenyl)diazenyl)[1,1'-biphenyl]-4-yl)diazenyl)-2,4-dihydroxyphenylarsonic acid 7145-97-3 AIDS-124174 AIDS124174 NSC15600