You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[[3-(1-ethoxyethyl)-1,2,4-oxadiazol-5-yl]methyl]-2-(4-fluorophenyl)-N',6-dimethylmorpholine-4-carboximidamide into molecular formula.
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C20H28FN5O3
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