5-[[4-[[4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-7-sulpho-1-naphthyl]azo]-1-naphthyl]azo]naphthalene-1,3,6-trisulphonic acid, ammonium sodium salt

5-[[4-[[4-[(4-Amino-6-chloro-1,3,5-triazine-2-yl)amino]-7-sulfo-1-naphtyl]azo]-1-naphtyl]azo]-1,3,6-naphthalenetrissulfonic acid/ammonia/sodium,(1:x:x) salt