2-Naphthalenesulfonic acid, 6-amino-5-5-(4-amino-6-chloro-1,3,5-triazin-2-yl)amino-2-sulfo-4-4-2-(sulfooxy)ethylsulfonylphenylazophenylazo-4-hydroxy-, sodium salt

6-Amino-5-[[5-[(4-amino-6-chloro[1,3,5]-tri- azin-2-yl)amino]-2-sulfo-4-[[4-[[2-(sulfo- oxy)ethyl]sulfonyl]phenyl]azo]phenyl]azo- 4-hydroxy-2-naphthalenesulfonic acid sodium salt