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 2-[2-(5-chlorothiophen-2-yl)-2-oxoethyl]sulfanyl-3-[(4-methylphenyl)methyl]quinazolin-4-one is given. What is its corresponding molecular formula?
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C22H17ClN2O2S2
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