The molecule is a sesquiterpenoid resulting formally from germacrane by oxidation at C(12) together with dehydrogenation across the C(1)-C(10), C(4)-C(5) and C(11)-C(13) bonds. It derives from a hydride of a germacrene A.
2-[(1R,3E,7E)-4,8-dimethylcyclodeca-3,7-dien-1-yl]prop-2-enal