[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a tridecadienoic acid with double bonds at positions 3 and 5 (both E isomer). It has a role as a metabolite."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][/C][=C][/C][=C][/C][C][=Branch1][C][=O][O]"}]