Bis[2-chloro-4-methyl-6-[[3-[[(4-methoxyphenyl)amino]carbonyl]-2-hydroxy-1-naphtyl]azo]benzenesulfonic acid]barium salt C??? ??, ??, ??

Bis[2-chloro-4-methyl-6-[[3-[[(4-methoxyphenyl)amino]carbonyl]-2-hydroxy-1-naphtyl]azo]benzenesulfonic acid]barium salt ?? ?? ? ???

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Bis[2-chloro-4-methyl-6-[[3-[[(4-methoxyphenyl)amino]carbonyl]-2-hydroxy-1-naphtyl]azo]benzenesulfonic acid]barium salt ?? ??