tetrasodium 3-[[4-[[4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-5-sulphonato-1-naphthyl]azo]-7-sulphonato-1-naphthyl]azo]naphthalene-1,5-disulphonate

3-[[4-[[4-[(4-Amino-6-chloro-1,3,5-triazin-2-yl)amino]-5-sodiosulfo-1-naphthalenyl]azo]-7-sodiosulfo-1-naphthalenyl]azo]-1,5-naphthalenedisulfonic acid disodium salt