You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule tert-butyl (2R)-2-[(6-chloro-2-methylsulfanylpyrimidin-4-yl)oxymethyl]pyrrolidine-1-carboxylate into molecular formula.
user
C15H22ClN3O3S
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