You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-(3-fluorophenyl)-2-[4-[4-(methylsulfanylmethyl)benzoyl]piperazin-1-yl]acetamide is given. What is its corresponding molecular formula?
user
C21H24FN3O2S
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