You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 3-[1-(5-fluoro-2-methoxyphenyl)sulfonyl-4-methylpiperidin-4-yl]-5-pyridin-3-yl-1,2,4-oxadiazole .
user
C20H21FN4O4S
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