You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 3-(3-fluorophenyl)-5-[1-(4-propylphenyl)sulfonylpyrrolidin-2-yl]-1,2,4-oxadiazole using the IUPAC nomenclature.
user
C21H22FN3O3S
assistant