1-oxa-8-thiaspiro[4.5]decan-2-one, 3-methylene- 3-methylene-1-oxa-8-thiaspiro[4.5]decan-2-one InChI=1/C9H12O2S/c1-7-6-9(11-8(7)10)2-4-12-5-3-9/h1-6H