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

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