You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-fluoro-N-methyl-3-[3-[[(4-methylphenyl)sulfonylamino]methyl]piperidine-1-carbonyl]benzenesulfonamide into its molecular formula.
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C21H26FN3O5S2
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