ChEBI: Wilforic acid C 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.