[{"from": "human", "value": "Describe this molecule. [C][=C][C][=C][Branch1][=Branch1][C][=C][Ring1][=Branch1][Cl][N][C][=Branch1][C][=O][O][Ring1][=Branch2]"}, {"from": "gpt", "value": "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."}]