10276-21-8 4,4,6-trimethyl-7-oxabicyclo[4.1.0]heptan-2-one 7-oxabicyclo[4.1.0]heptan-2-one, 4,4,6-trimethyl- InChI=1/C9H14O2/c1-8(2)4-6(10)7-9(3,5-8)11-7/h7H,4-5H2,1-3H