[{"from": "human", "value": "Provide a description of this molecule. [C][C@@H1][C@H1][C@H1][C][C][C@@H1][C@][Branch2][Branch1][#Branch1][C][C][C@@H1][Branch2][Ring2][S][C][Branch2][Ring2][Branch2][C@@H1][Ring1][=Branch1][C][C][C@][Ring1][#Branch2][Branch2][Ring1][N][C@@][Ring1][=C][Branch2][Ring1][Branch1][C][C][C@][Ring2][Ring1][C][Branch1][Branch2][C][C][=C][Ring2][Ring1][=Branch1][C][C][=Branch1][C][=O][O][C][C][Branch1][C][C][C][O][C]"}, {"from": "gpt", "value": "The molecule is a pentacyclic triterpenoid that is urs-20-ene substituted by a carboxy group at position 28 and a beta-hydroxy group at position 3. It has been isolated from Juglans sinensis. It has a role as a plant metabolite. It is a pentacyclic triterpenoid and a hydroxy monocarboxylic acid. It derives from a hydride of an ursane."}]