The molecule is a sapogenin that is olean-12-en-28-oic acid substituted by a beta-hydroxy group at position 3 and an oxo group at position 23. It is a pentacyclic triterpenoid, a sapogenin, an aldehyde and a monocarboxylic acid. It derives from an oleanolic acid. It is a conjugate acid of a gypsogenin(1-).
(4aS,6aR,6aS,6bR,8aR,9S,10S,12aR,14bS)-9-formyl-10-hydroxy-2,2,6a,6b,9,12a-hexamethyl-1,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-tetradecahydropicene-4a-carboxylic acid