136884-67-8 2-((Tetrahydro-8H-(1,3,2)thiazagermolo(2,3-b)(1,3,2)thiazagermol-8-yl)thio)ethanamine 2HCl Ethanamine, 2-((tetrahydro-8H-(1,3,2)thiazagermolo(2,3-b)(1,3,2)thiazagermol-8-yl)thio)-, dihydrochloride