1H-Imidazole, 2,2'-((2,3,5,6-tetrachloro-1,4-phenylene)bis(methylenethio))bis(4,5-dihydro-, dihydrochloride 2,2-(((Tetrachloro-p-phenylene)methylene)thio)di-2-imidazoline, dihydrochloride 64036-85-7