[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a butyrate. It is functionally related to a (R)-carnitine."}, {"from": "gpt", "value": "[C][NH1+1][Branch1][C][C][C][C@@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][O]"}]