sodium 2-methyl-4-[4-[[4-(3-methylanilino)phenyl][4-(3-methylphenylimino)phenylidene]methyl]anilino]benzenesulphonate

2-Methyl-4-[4-[[4-(3-methylphenylamino)phenyl][4-(3-methylphenylimino)-2,5-cyclohexadien-1-ylidene]methyl]phenylamino]benzenesulfonic acid sodium salt