[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][Branch1][O][C][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is a medium-chain fatty acid anion comprising hexanoate substituted at C-2 and C-4 with oxo and hydroxy groups respectively. It is a 2-oxo monocarboxylic acid anion, a straight-chain saturated fatty acid anion, a medium-chain fatty acid anion, a hydroxy fatty acid anion and an oxo fatty acid anion. It is functionally related to a hexanoate. It is a conjugate base of a 4-hydroxy-2-oxohexanoic acid."}]