3,7-dimethyl-10-propan-2-ylidenecyclodeca-3,7-dien-1-one

(5Z,10E)-(3S,4R)-2,2,6,10-Tetramethyl-1-oxa-spiro[2.9]dodeca-5,10-dien-4-ol

7,11-epoxyisogermacrone