5-isopropyl-2-methyl-6-oxabicyclo[3.2.1]oct-2-ene 6-oxabicyclo[3.2.1]oct-2-ene, 2-methyl-5-(1-methylethyl)- InChI=1/C11H18O/c1-8(2)11-5-4-9(3)10(6-11)7-12-11/h4,8,10H,5-7H2,1-3H