You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[3-[2-(diethylamino)ethoxy]-4-methoxyphenyl]-2-(6-nitro-3-oxo-1,4-benzoxazin-4-yl)acetamide into molecular formula.
user
C23H28N4O7
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