2,2'-((3,3'-Dimethyl(1,1'-biphenyl)-4,4'-diyl)bis(imino(1-acetyl-2-oxo-2,1-ethanediyl)azo))bis(5-(acetylamino)benzoic) acid;5-acetamido-2-[1-[[4-[4-[[2-(4-acetamido-2-carboxy-phenyl)azo-3-oxo-butanoyl]amino]-3-methyl-phenyl]-2-methyl-phenyl]carbamoyl]-2-oxo-propyl]azo-benzoic acid
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