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-[(3-chloro-4-fluorophenyl)methyl]-2-(2-oxo-6-piperidin-1-ylsulfonylquinazolin-1-yl)acetamide is given. What is its corresponding molecular formula?
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C22H22ClFN4O4S
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