You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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N-[3-(2-ethyl-4-oxoquinazolin-3-yl)propyl]-2,2,5,5-tetramethylpyrrolidine-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C22H32N4O2
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