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4-(4,5-Dihydro-1-phenyl-3-methyl-5-oxo-1H-pyrazol-4-ylazo)-4'-(2-hydroxy-1-naphtylazo)biphenyl-2,2'-disulfonic acid Structure

4-(4,5-Dihydro-1-phenyl-3-methyl-5-oxo-1H-pyrazol-4-ylazo)-4'-(2-hydroxy-1-naphtylazo)biphenyl-2,2'-disulfonic acid