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1',2'-Dihydro-6'-hydroxy-3,4'-dimethyl-2'-oxo-5'-[[4-(phenylazo)phenyl]azo]-1,3'-bipyridin-1-ium Structure

1',2'-Dihydro-6'-hydroxy-3,4'-dimethyl-2'-oxo-5'-[[4-(phenylazo)phenyl]azo]-1,3'-bipyridin-1-ium