You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-methoxy-N-[(6-pyrrolidin-1-yl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methyl]-1-benzofuran-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H20N6O3
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