You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-[(2R)-1-(1-butylsulfonyl-5-methylpyrrolidin-2-yl)propan-2-yl]oxy-5-methyl-6-(2-methylpyridin-3-yl)oxypyrimidine by IUPAC nomenclature, provide its molecular formula.
user
C23H34N4O4S
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