[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][Branch1][C][C][C][=Branch1][C][=O][O][C][C@@][Branch2][Ring2][#C][C@H1][Branch2][Ring1][P][C@H1][Branch2][Ring1][Ring1][C@@H1][Branch1][Ring2][O][Ring1][Branch1][N][C][=C][C][=Branch1][=Branch1][=N][C][Ring1][=Branch1][=O][N][O][C][=Branch1][C][=O][C][Branch1][C][C][C][O][C][=Branch1][C][=O][C][Branch1][C][C][C][N][=N+1][=N-1]"}, {"from": "gpt", "value": "The molecule is an orally administered prodrug with activity against the hepatitis C virus (HCV). Balapiravir is a tri-isobutyrate ester prodrug of R1479, a nucleoside analogue inhibitor of HCV RNA-dependent RNA polymerase."}]