172753-31-0 Piperidine, 1,1'-((tetrahydro-2,5-thiophenediyl)bis(methylene))bis-, cis- cis-1,1'-((Tetrahydro-2,5-thiophenediyl)bis(methylene))bispiperidine cis-2,5-Di(piperidinomethyl)-1-thiacyclopentane