[{"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][Branch1][=N][C][S][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}]