You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [2-[1-(2,5-difluorophenyl)sulfonylpiperidin-4-yl]-5-methyl-1,3-oxazol-4-yl]-pyrrolidin-1-ylmethanone into molecular formula.
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C20H23F2N3O4S
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