[{"from": "human", "value": "Describe this molecule. [C][C][N][=C][Branch1][Ring2][N][Ring1][Branch1][N][C][=C][Branch1][N][C][=C][C][=N][S][N][=C][Ring1][Branch1][Ring1][=Branch2][Cl]"}, {"from": "gpt", "value": "The molecule is a commonly used muscle relaxant that has been linked to rare instances of acute liver injury, a few of which have been fatal."}]