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5-[(4-Amino-2-hydroxy-5-methylphenyl)azo]-2-[4-[(4-amino-2-hydroxy-5-methylphenyl)azo]phenoxy]benzenesulfonic acid sodium salt Structure

5-[(4-Amino-2-hydroxy-5-methylphenyl)azo]-2-[4-[(4-amino-2-hydroxy-5-methylphenyl)azo]phenoxy]benzenesulfonic acid sodium salt