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 2-[(3-chloro-4-methylquinolin-2-yl)methylsulfanyl]-5-[(4-methylphenoxy)methyl]-1,3,4-oxadiazole into molecular formula.
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C21H18ClN3O2S
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