You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [3-[(4-fluorophenoxy)methyl]-1,2,4-oxadiazol-5-yl]methyl 3-(3-oxo-1,4-benzoxazin-4-yl)propanoate .
user
C21H18FN3O6
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