[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][Branch2][Ring1][#C][C][=Branch2][Ring1][#Branch2][=N][C][=Branch1][C][=O][N][Ring1][#Branch1][C@H1][C@H1][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][O][F][N][I]"}, {"from": "gpt", "value": "The molecule is a pyrimidine nucleoside analog with activity against various herpesviruses. Fiacitabine is converted to its triphosphate form in vivo and inhibits viral DNA polymerase."}]