[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=Branch1][C][=O][Branch1][C][O][P][=Branch1][C][=O][Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule has antiviral activity against many viruses and is used intravenously in therapy of serious cytomegalovirus infections, largely in immunocompromised patients. Foscarnet has been associated with mild-to-moderate serum aminotransferase elevations during intravenous therapy, but not with episodes of clinically apparent liver injury."}]