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-[4-[4-(difluoromethoxy)phenyl]-5-methyl-1,3-thiazol-2-yl]-2-(6-nitro-3-oxo-1,4-benzoxazin-4-yl)acetamide into molecular formula.
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C21H16F2N4O6S
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