3-((E)-(2,4-二甲基苯基)二氮烯基)-2,4-二羟基-5-((4-磺基苯基)二氮烯基)苯甲酸

3-((E)-(2,4-Dimethylphenyl)diazenyl)-2,4-dihydroxy-5-((4-sulfophenyl)diazenyl)benzoic Acid