The molecule is a diterpenoid that is ent-cassa-12,15-diene in which the hydrogen at position 3beta has been replaced by a hydroxy group. It is a diterpenoid and a secondary alcohol. It derives from a hydride of an ent-cassa-12,15-diene.
(2R,4aS,4bR,8S,8aR,10aS)-7-ethenyl-1,1,4a,8-tetramethyl-2,3,4,4b,5,8,8a,9,10,10a-decahydrophenanthren-2-ol