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-(5-chloro-2,3-dihydro-1,4-benzodioxin-7-yl)-N-[5-[(4-cyanophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]acetamide into molecular formula.
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C20H15ClN4O3S2
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