[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][N][Branch1][#Branch2][C][=Branch1][C][=O][N][=C][Ring1][#Branch1][N][C][C@@H1][Branch1][Ring1][C][O][O][C][P][=Branch1][C][=O][Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule is cytosine substituted at the 1 position by a 3-hydroxy-2-(phosphonomethoxy)propyl group (S configuration). A nucleoside analogue, it is an injectable antiviral used for the treatment of cytomegalovirus (CMV) retinitis in AIDS patients. It has a role as an antiviral drug, an antineoplastic agent, an anti-HIV agent and a photosensitizing agent. It is a pyrimidone and a member of phosphonic acids. It is a conjugate acid of a cidofovir(2-) and a cidofovir(1-)."}]