tetrasodium 4-[[4-[[4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2,5-dimethylphenyl]azo]-6-sulphonato-1-naphthyl]azo]naphthalene-1,3,6-trisulphonate

4-[[4-[[4-[(4,6-Dichloro-1,3,5-triazin-2-yl)amino]-2,5-dimethylphenyl]azo]-6-[(sodiooxy)sulfonyl]naphthalen-1-yl]azo]-1,3,6-naphthalenetrisulfonic acid trisodium salt