Benzoic acid, 2-hydroxy-5-[[4-[[[[2-methoxy-4-[(3-sulfophenyl)azo]phenyl]amino]carbonyl]amino]phenyl]azo], Benzoic acid, 2-hydroxy-5-((4-((((2-methoxy-4-((3-sulfophenyl)azo)phenyl)amino)carbonyl)amino)phenyl)azo), Benzoic acid, 2-hydroxy-5-(2-(4-((((2-methoxy-4-(2-(3-sulfophenyl)diazenyl)phenyl)amino)carbonyl)amino)phenyl)diazenyl)-