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 N-[5-[(7-methyl-4-oxo-3H-quinolin-2-yl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]butanamide into molecular formula.
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C17H18N4O2S2
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