[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@@H1][C][C][C@@][Branch2][Branch1][O][C][C][C@@][Branch2][Branch1][Ring2][C][=Branch2][Ring2][Ring2][=C][C][C@H1][C@][Ring1][=Branch1][Branch2][Ring1][#Branch2][C][C][C@@H1][C@@][Ring1][=Branch1][Branch1][P][C][C@H1][Branch1][N][C@H1][Branch1][Branch2][C][Ring1][=Branch1][Branch1][C][C][C][O][O][C][C][C@@H1][Ring2][Ring1][Branch2][C@][Ring2][Ring1][N][Branch1][C][C][O][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a pentacyclic triterpenoid that is urs-12-en-28-oic acid substituted by hydroxy groups at positions 2, 3 and 19 respectively (the 2alpha,3alpha-stereoisomer). It has been isolated from the leaves of Rosa laevigata. It has a role as a plant metabolite. It is a pentacyclic triterpenoid, a hydroxy monocarboxylic acid and a triol. It derives from a hydride of an ursane."}]