[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a pentacyclic triterpenoid that is oleana-11,13(18)-diene substituted by hydroxy groups at positions 3 and 23 and a carboxy group at position 28 (the 3alpha stereoisomer). Isolated from the leaves and twigs of Fatsia polycarpa, it exhibits antibacterial and anti-HBV activities. It has a role as a metabolite, an anti-HBV agent, an antibacterial agent and a plant metabolite. It is a pentacyclic triterpenoid and a hydroxy monocarboxylic acid. It derives from a hydride of an oleanane."}, {"from": "gpt", "value": "[C][C@][C][C][C@H1][Branch2][Branch1][Branch2][C@@][Branch2][Ring2][#C][C@@H1][Ring1][=Branch1][C][C][C@@][Branch2][Ring2][Branch1][C@@H1][Ring1][#Branch2][C][=C][C][=C][C][C][Branch2][Ring1][Branch1][C][C][C@@][Ring1][=Branch1][Branch1][=Branch2][C][C][C@][Ring1][#Branch2][Ring1][=C][C][C][=Branch1][C][=O][O][Branch1][C][C][C][C][Branch1][C][C][C][O][O]"}]