[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch1][Branch1][C][C][C][=O][C][/C][=C][\\C][/C][=C][\\C][/C][=C][\\C][/C][=C][\\C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a polyunsaturated fatty acid that is arachidonic acid substituted at position 20 by an oxo group. It is a long-chain fatty acid, a polyunsaturated fatty acid and an omega-oxo fatty acid. It is functionally related to an arachidonic acid. It is a conjugate acid of a 20-oxoarachidonate."}]