[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a centrally acting muscle relaxant commonly used for low back pain. Chlorzoxazone has been linked to rare instances of acute liver injury, a few of which have been fatal."}, {"from": "gpt", "value": "[C][=C][C][=C][Branch1][=Branch1][C][=C][Ring1][=Branch1][Cl][N][C][=Branch1][C][=O][O][Ring1][=Branch2]"}]