[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][C][C][/C][=C][\\C][=C][\\C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a polyunsaturated fatty acid anion that is the conjugate base of (10E,12Z)-octadecadienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a polyunsaturated fatty acid anion and a long-chain fatty acid anion. It is a conjugate base of a (10E,12Z)-octadecadienoic acid."}]