You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[5-(2-bromophenyl)-1,3,4-oxadiazol-2-yl]methyl]-N-cyclopropyl-3-methyl-1-benzofuran-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C22H18BrN3O3
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