You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule methyl N-[1-[4-[2-[2-(3-fluoropropyl)pyrimidin-5-yl]ethynyl]phenyl]propan-2-yl]carbamate into molecular formula.
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C20H22FN3O2
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