1,5-Naphthalenedisulfonic acid, 2-1-amino-7-5-(4,6-dichloro-1,3,5-triazin-2-yl)amino-2-sulfophenylazo-8-hydroxy-3,6-disulfo-2-naphthalenylazo-, pentasodium salt

pentasodium 2-[[1-amino-7-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulphonatophenyl]azo]-8-hydroxy-3,6-disulphonato-2-naphthyl]azo]naphthalene-1,5-disulphonate