1,2,3-Oxadiazolium, 4-(2-(2-benzoylhydrazino)-4-thiazolyl)-5-hydroxy-3-(4-methylphenyl)-, inner salt 155811-73-7 4-(2-(2-Benzoylhydrazino)-4-thiazolyl)-5-hydroxy-3-p-tolyl-1,2,3-oxadiazolium inner salt