[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a pentacyclic triterpenoid that is olean-12-ene substituted by hydroxy groups at 3beta and 27-positions and a carboxy group at position 28. It is a pentacyclic triterpenoid, a monocarboxylic acid and a diol. It derives from a hydride of an oleanane."}, {"from": "gpt", "value": "[C][C@][C][C][C@@H1][Branch2][Branch1][#Branch2][C][Branch2][Branch1][C][C@@H1][Ring1][=Branch1][C][C][C@@][Branch2][Ring2][Branch2][C@@H1][Ring1][#Branch2][C][C][=C][C@][Ring1][=Branch1][Branch2][Ring1][#Branch2][C][C][C@@][Branch1][S][C@H1][Ring1][=Branch1][C][C][Branch1][Branch1][C][C][Ring1][=Branch1][Branch1][C][C][C][C][=Branch1][C][=O][O][C][O][C][Branch1][C][C][C][O]"}]