You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[2-[2-(3,4-dimethoxyphenyl)ethyl-[(5-methylfuran-2-yl)methyl]amino]-2-oxoethyl]-4-fluoro-N-(2-pyrrolidin-1-ylethyl)benzamide by IUPAC nomenclature, provide its molecular formula.
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C31H38FN3O5
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