5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-[(p-tolyl)azo]naphthalene-2,7-disulphonic acid

5-[(4,6-Dichloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-[(4-methylphenyl)azo]-2,7-naphthalenedisulfonic acid