[{"from": "human", "value": "Please give me some details about this molecule. [C][=Branch1][C][=O][Branch1][C][O][P][=Branch1][C][=O][Branch1][C][O][O]"}, {"from": "gpt", "value": "An antiviral agent used in the treatment of cytomegalovirus retinitis. Foscarnet also shows activity against human herpes viruses and HIV."}]