3-((1S,3R)-3-[1,3]Dioxolan-2-yl-2,2-dimethyl-cyclopropyl)-2-methyl-propan-1-ol

(1R,7S)-5,8,8-Trimethyl-3-oxa-bicyclo[5.1.0]octan-4-one

(1R,7S)-5,8,8-trimethyl-4-oxabicyclo[5.1.0]octan-3-one