1-oxaspiro[4.5]decan-2-one, 7,7,9,9-tetramethyl-3-methylene- 67464-49-7 7,7,9,9-tetramethyl-3-methylene-1-oxaspiro[4.5]decan-2-one InChI=1/C14H22O2/c1-10-6-14(16-11(10)15)8-12(2,3)7-13(4,5)9-14/h1,6-9H2,2-5H