[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an oxooctadecadienoic acid that consists of 9E,11E-octadecadienoic acid with the oxo substituent located at position 13. It has a role as a metabolite. It is an oxo fatty acid and a 13-oxo-9,11-octadecadienoic acid."}, {"from": "gpt", "value": "[C][C][C][C][C][C][=Branch1][C][=O][/C][=C][/C][=C][/C][C][C][C][C][C][C][C][=Branch1][C][=O][O]"}]