2,6-Nonadienoic acid, 9-(3,3-dimethyloxiranyl)-3,7-dimethyl- 3,7,11-Trimethyl-10,11-epoxy-2,6-dodecadienoic acid 34375-62-7 9-(3,3-Dimethyloxiranyl)-3,7-dimethyl-2,6-nonadienoic acid