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 4-chloro-N-[5-[4-(4-methylphenyl)piperazin-1-yl]sulfonyl-1,3,4-thiadiazol-2-yl]benzamide into molecular formula.
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C20H20ClN5O3S2
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