136884-69-0 2,2'-((Tetrahydro-4H-1,3,6,2-dithiazagermocin-2-ylidene)bis(thio))bisethanamine 2HCl Ethanamine, 2,2'-((tetrahydro-4H-1,3,6,2-dithiazagermocin-2-ylidene)bis(thio))bis-, dihydrochloride