You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 1-[2-(3-chlorophenyl)-5-methylsulfonyl-2H-1,3,4-thiadiazol-3-yl]ethanone using the IUPAC nomenclature.
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C11H11ClN2O3S2
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