You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3S)-1-[(3-fluorophenyl)methyl]-N-(2-methyl-2-pyrrolidin-1-ylpropyl)-6-oxopiperidine-3-carboxamide into its molecular formula.
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C21H30FN3O2
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