You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule N-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)-2-(4-oxochromeno[4,3-c]pyrazol-1-yl)acetamide into molecular formula.
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C21H17N3O5
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