Benzenecarboximidic acid, 4,4'-[1,4-phenylenebis(carbonylimino)]bis[N-methyl-, bis(2,2-dimethylhydrazide), dihydrochloride Benzenecarboximidic acid, 4,4'-[1,4-phenylenebis(carbonylimino)]bis[N-methyl-, bis(2,2-dimethylhydrazide), hydrochloride, (4:8:3) NSC73285