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-[(1R)-1-[3-fluoro-4-(2-methylimidazol-1-yl)phenyl]ethyl]-4-oxochromene-2-carboxamide is given. What is its corresponding molecular formula?
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C22H18FN3O3
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