(E)-3-(2-((dimethylamino)methyl)thiazol-4-yl)-N-(2-(((2-((dimethylamino)methyl)thiazol-4-yl)methyl)thio)ethyl)-N'-methyl-2-nitroprop-1-ene-1,1-diamine,(E)-3-(2-((dimethylamino)methyl)thiazol-4-yl)-N-(2-(((2-((dimethylamino)methyl)thiazol-4-yl)methyl)thio)ethyl)-N'-methyl-2-nitroprop-1-ene-1,1-diamine,Nizatidine Impurity