[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a hydroxy monocarboxylic acid anion. It is functionally related to a hexanoate. It is a conjugate base of a 3-hydroxyhexanoic acid."}, {"from": "gpt", "value": "[C][C][C][C][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][O]"}]