You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-N-[(3S,4R)-4-ethoxyoxolan-3-yl]-5-fluoro-4-N,4-N-dimethylpyrimidine-2,4-diamine .
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C12H19FN4O2
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