[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an omega-hydroxy fatty acid anion obtained by deprotonation of the carboxy group of any omega-hydroxy-medium-chain fatty acid; major species at pH 7.3. It is an omega-hydroxy fatty acid anion and a medium-chain fatty acid anion. It is a conjugate base of an omega-hydroxy-medium-chain fatty acid."}, {"from": "gpt", "value": "[C][O].[C][=Branch1][C][=O][O-1]"}]