[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a metabolite found in or produced by Escherichia coli (strain K12, MG1655)."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O][C@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][N+1][Branch1][C][C][Branch1][C][C][C]"}]