You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[3-(3-fluoro-4-methylphenyl)-1,2,4-oxadiazol-5-yl]ethyl 4-(2-methoxyethylamino)-3-nitrobenzoate into molecular formula.
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C21H21FN4O6
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