The molecule is a pentacyclic triterpenoid with formula C30H48O4, originally isolated from Tripterygium doianum. It has a role as a plant metabolite. It is a pentacyclic triterpenoid, a cyclic terpene ketone, a hydroxy monocarboxylic acid and a secondary alpha-hydroxy ketone. It derives from a hydride of a friedelane.
(2R,4aS,6aS,6aR,6bS,8aS,9R,11R,12aS,14aS,14bR)-11-hydroxy-2,4a,6a,6a,8a,9,14a-heptamethyl-10-oxo-3,4,5,6,6b,7,8,9,11,12,12a,13,14,14b-tetradecahydro-1H-picene-2-carboxylic acid