You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-cyclopropyl-N-[1-(2,3-dihydro-1-benzofuran-5-ylsulfonyl)piperidin-4-yl]-6-methylpyrimidin-4-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H26N4O3S
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