[{"from": "human", "value": "Describe this molecule. [C][Branch1][O][C][C][C][C][C][C][=Branch1][C][=O][O-1][C][C][C][C][C][=O]"}, {"from": "gpt", "value": "The molecule is a omega-oxo fatty acid anion that is the conjugate base of 12-oxododecanoic acid, arising from the deprotonation of the carboxy group; major species at pH 7.3. It is an omega-oxo fatty acid anion, an aldehydic acid anion and a medium-chain fatty acid anion. It is a conjugate base of a 12-oxododecanoic acid."}]