5-isopropyl-2,7-dimethyl-6-oxabicyclo[3.2.1]oct-2-ene 6-oxabicyclo[3.2.1]oct-2-ene, 2,7-dimethyl-5-(1-methylethyl)- InChI=1/C12H20O/c1-8(2)12-6-5-9(3)11(7-12)10(4)13-12/h5,8,10-11H,6-7H2,1-4H