[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][C][C][C@H1][/C][=Branch1][S][=C][/C][=C][\\C][C][C][C][C][C][C][C][=Branch1][C][=O][O-1][/O][Ring1][S]"}, {"from": "gpt", "value": "The molecule is a long-chain unsaturated fatty acid anion that is the conjugate base of (9Z,13S)-12,13-epoxyoctadeca-9,11-dienoic acid arising from deprotonation of the carboxylic acid function. It is a long-chain fatty acid anion and a polyunsaturated fatty acid anion. It is a conjugate base of a (9Z,13S)-12,13-epoxyoctadeca-9,11-dienoic acid."}]