6-oxaspiro[4.5]dec-8-ene, 9-methyl- 9-methyl-6-oxaspiro[4.5]dec-8-ene InChI=1/C10H16O/c1-9-4-7-11-10(8-9)5-2-3-6-10/h4H,2-3,5-8H2,1H