(1alpha,3alpha,5alpha,7alpha)-3,8,8-Trimethyl-4-oxatricyclo(5.1.0.03,5)octane 35671-18-2 4-Oxatricyclo[5.1.0.0(3,5)-]octane, 3,8,8-trimethyl-, (1.alpha.,3.alpha.,5.alpha.,7.alpha.)- EINECS 252-664-8