[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a metabolite found in or produced by Escherichia coli (strain K12, MG1655)."}, {"from": "gpt", "value": "[C][N][C][=C][Branch1][Branch1][N][=C][Ring1][Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}]