[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][Ring1][C][=O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an aldehydic acid. It is functionally related to a propionic acid. It is a conjugate acid of a 3-oxopropanoate."}]