[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=N][C][=Branch1][C][=O][N][C][=Branch1][Branch1][=C][Ring1][#Branch1][F][N]"}, {"from": "gpt", "value": "The molecule is a pyrimidine compound and a fluorinated cytosine analog exhibiting antifungal activity. After penetration into the fungal cells, flucytosine is deaminated to its active metabolite 5-fluorouracil. 5-fluorouracil replaces uracil during fungal RNA synthesis, thereby inhibiting fungal protein synthesis. In addition, fluorouracil is further metabolized to 5-fluorodeoxyuridylic acid monophosphate, which inhibits thymidylate synthetase, thereby interrupting nucleotide metabolism, DNA synthesis and ultimately protein synthesis."}]