2,2'-Dimethyl-4-(4-hydroxy-5-carboxyphenylazo)-4'-[5-(4-sulfophenylazo)-2,6-dihydroxy-phenylazo]biphenyl;2-Hydroxy-5-[4'-[2,6-dihydroxy-3-(4-sulfophenylazo)phenylazo]-2,2'-dimethyl-1,1'-biphenyl-4-ylazo]benzenecarboxylic acid
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