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 pyrrolidin-1-yl-[4-[[1-(thiophene-2-carbonyl)pyrrolidin-2-yl]methoxy]phenyl]methanone using the IUPAC nomenclature.
user
C21H24N2O3S
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