[{"from": "human", "value": "Provide a description 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][/O][Ring1][S]"}, {"from": "gpt", "value": "The molecule is the (9Z)-isomer of (13S)-12,13-epoxyoctadeca-9,11-dienoic acid. It is a conjugate acid of a (9Z,13S)-12,13-epoxyoctadeca-9,11-dienoate."}]