You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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N-[1-(2,2-dimethylpropanoyl)-2-[(2-phenyl-1,3-thiazol-4-yl)methyl]pyrrolidin-3-yl]methanesulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
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C20H27N3O3S2
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