[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][C][C][C][C][C][C][/C][=C][/C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an unsaturated fatty acid anion that is the conjugate base of trans-2-dodecenoic acid obtained by deprotonation of the carboxy group; major species at pH 7.3. It is an unsaturated fatty acid anion and a medium-chain fatty acid anion. It is a conjugate base of a trans-2-dodecenoic acid."}]