[{"from": "human", "value": "Describe this molecule. [C][C@@][C][C][C@][Branch2][Branch1][C][C][C][C][Branch2][Ring2][Branch2][C][=C][Ring1][=Branch1][C@H1][Ring1][#Branch2][C][C][C@H1][C@][Ring1][=C][Branch2][Ring1][#Branch1][C][C][C@@H1][C@@][Ring1][=Branch1][Branch1][=C][C][C][C][=Branch1][C][=O][C][Ring1][#Branch1][Branch1][C][C][C][C][C][Branch1][C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a pentacyclic triterpenoid that is olean-18-ene substituted at position 3 by an oxo group and position 28 by a carboxy group. It has a role as a metabolite, an anti-HSV-1 agent and an anti-HIV agent. It derives from a hydride of an oleanane."}]