5-[[4-[[[4-[[2,4-dihydroxy-5-[[2-hydroxy-5-[(3-sulphophenyl)azo]phenyl]azo]phenyl]azo]phenyl]amino]carbonyl]phenyl]azo]salicylic acid

5-[[4-[[[4-[[2,4-Dihydroxy-5-[[2-hydroxy-5-[(3-sulfophenyl)azo]phenyl]azo]phenyl]azo]phenyl]amino]carbonyl]phenyl]azo]-2-hydroxybenzoic acid