[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a Nucleoside Metabolic Inhibitor. The mechanism of action of fluorouracil is as a Nucleic Acid Synthesis Inhibitor."}, {"from": "gpt", "value": "[C][=C][Branch1][=N][C][=Branch1][C][=O][N][C][=Branch1][C][=O][N][Ring1][Branch2][F]"}]