The molecule is a pentacyclic triterpenoid that is urs-12-ene substituted by a carboxy group at position 28, alpha-configured hydroxy groups at positions 2 and 19 and an oxo group at position 3. Isolated from the whole plants of Geum japonicum, it exhibits activity against HIV-1 protease. It has a role as a metabolite and a HIV protease inhibitor. It is an oxo monocarboxylic acid, a diol, a pentacyclic triterpenoid and a secondary alpha-hydroxy ketone. It derives from a hydride of an ursane.
(1R,2R,4aS,6aR,6aS,6bR,8aR,11R,12aR,14bS)-1,11-dihydroxy-1,2,6a,6b,9,9,12a-heptamethyl-10-oxo-3,4,5,6,6a,7,8,8a,11,12,13,14b-dodecahydro-2H-picene-4a-carboxylic acid