You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1-propylsulfonylpiperidin-3-yl)-[4-[4-(trifluoromethyl)benzoyl]piperazin-1-yl]methanone into its molecular formula.
user
C21H28F3N3O4S
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