disodium 5-[[4-[[4-[[6-[(4-amino-3-methylbenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-3-methylbenzoyl]amino]phenyl]azo]salicylate

5-[[4-[[4-[[6-[(4-Amino-3-methylbenzoyl)amino]-1-hydroxy-3-sulfo-2-naphtyl]azo]-3-methylbenzoyl]amino]phenyl]azo]-2-hydroxybenzoic acid disodium salt