sodium 2-[[2-amino-8-hydroxy-6-[(methylanilino)sulphonyl]-1-naphthyl]azo]-4-[[4-chloro-6-[(2-methoxyethyl)amino]-1,3,5-triazin-2-yl]amino]benzenesulphonate

2-[[2-Amino-8-hydroxy-6-[(methylphenylamino)sulfonyl]-1-naphtyl]azo]-4-[[4-chloro-6-[(2-methoxyethyl)amino]-1,3,5-triazin-2-yl]amino]benzenesulfonic acid sodium salt