[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a synthetic derivative prodrug of ethyl ester with antiviral activity. Osetamivir blocks neuraminidases on the surfaces of influenza viruses, interfering with host cell release of complete viral particles."}, {"from": "gpt", "value": "[C][C][C][Branch1][Ring1][C][C][O][C@@H1][C][=C][Branch1][#C][C][C@@H1][Branch1][#Branch2][C@H1][Ring1][=Branch1][N][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][O][C][C]"}]