You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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3-fluoro-3-(hydroxymethyl)-N-[[(2R)-1-(2-methylpropyl)pyrrolidin-2-yl]methyl]pyrrolidine-1-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C15H28FN3O2
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