The molecule is a diterpenoid that is the 3alpha-hydroxy-11-oxo derivative of ent-cassa-12,15-diene. It is a diterpenoid, an enone and a secondary alcohol. It derives from a hydride of an ent-cassa-12,15-diene.
(1S,4aR,4bR,7R,8aS,10aR)-2-ethenyl-7-hydroxy-1,4b,8,8-tetramethyl-4a,5,6,7,8a,9,10,10a-octahydro-1H-phenanthren-4-one