You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule [5-[(2R)-2-(5-fluoropyridin-3-yl)pyrrolidin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl] N-[(1S,3S)-3-hydroxycyclopentyl]carbamate into molecular formula.
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C21H23FN6O3
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