p,p'-[m-phenylenebis[imino(6-chloro-1,3,5-triazine-2,4-diyl)imino(8-hydroxy-3,6-disulpho-1,7-naphthylene)azo]]dibenzoic acid

4,4'-[1,3-Phenylenebis[imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(8-hydroxy-3,6-disulfo-1,7-naphthalenediyl)azo]]bisbenzoic acid