You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (2R)-1-[(2R,3R,5R)-2,5-dimethyl-3-phenylpyrrolidin-1-yl]-2-methylsulfonylpropan-1-one into molecular formula.
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C16H23NO3S
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