You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 5-bromo-N-[5-[3-(dimethylamino)pyrrolidin-1-yl]pyridin-2-yl]-2,3-dihydro-1-benzofuran-3-carboxamide .
user
C20H23BrN4O2
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