The molecule is a pentacyclic triterpenoid isolated from the leaves of Garcia parviflora. It is a terpene lactone, a pentacyclic triterpenoid and an epsilon-lactone. It derives from a friedelin.
(1S,2R,5R,10R,11S,14R,15S,20R,21S)-2,5,8,8,11,14,20,21-octamethyl-19-oxapentacyclo[12.9.0.02,11.05,10.015,21]tricosan-18-one