You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-(5-methylpyridin-2-yl)-N-propan-2-ylmethanesulfonamide;1-(5-methylpyrimidin-2-yl)-N-propan-2-ylmethanesulfonamide;N-propan-2-yl-1-pyridin-2-ylmethanesulfonamide;N-propan-2-yl-1-pyrimidin-2-ylmethanesulfonamide by IUPAC nomenclature, provide its molecular formula.
user
C83H135N23O18S9
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