You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-[4-[[ethyl-[(3-fluoro-4-methoxyphenyl)methyl]amino]methyl]-2-oxochromen-7-yl]acetamide is given. What is its corresponding molecular formula?
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C22H23FN2O4
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