1-Azabicyclo(2.2.2)octane-3-spiro(2'-thiazolidine) hydrochloride 19039-24-8 7,10-Ethano-1-thia-4,7-diazaspiro(4.5)decane dihydrochloride Spiro(quinuclidine-3,2'-thiazolidine), dihydrochloride