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Under IUPAC nomenclature, a molecule named 4-[2-[8-chloro-2-[(5-methyl-1,3,4-thiadiazol-2-yl)sulfanyl]-4-propan-2-yloxyquinolin-7-yl]oxyethyl]morpholine is given. What is its corresponding molecular formula?
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C21H25ClN4O3S2
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