[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=N][N][C][=C][Ring1][Branch1][C][=Branch1][C][=O][N][C][=N][Ring1][#Branch1]"}, {"from": "gpt", "value": "The molecule is a xanthine oxidase inhibitor and a widely used medication for gout. Allopurinol is a rare but well known cause of acute liver injury that has features of a hypersensitivity reaction and can be severe and even fatal."}]