[{"from": "human", "value": "Generate a molecule based on this description. 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."}, {"from": "gpt", "value": "[C][=Branch1][C][=O][Branch1][C][O][P][=Branch1][C][=O][Branch1][C][O][O]"}]