79057-88-8

trisodium 6-[(4-amino-2-hydroxyphenyl)azo]-3-[[4-[[4-[[7-[(4-amino-2-hydroxyphenyl)azo]-1-hydroxy-3-sulphonato-2-naphthyl]azo]phenyl]amino]-3-sulphonatophenyl]azo]-4-hydroxynaphthalene-2-sulphonate