[{"from": "human", "value": "Generate a molecule based on this description. The molecule is an alicyclic ketone that is oxocyclopentanone substituted at position 3 by a carboxy group. It is a 4-oxo monocarboxylic acid and an alicyclic ketone. It is a conjugate acid of a 3-oxocyclopentanecarboxylate."}, {"from": "gpt", "value": "[C][C][C][=Branch1][C][=O][C][C][Ring1][=Branch1][C][=Branch1][C][=O][O]"}]