You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 6-chloro-N-[3-[2-(diethylamino)ethyl]-1H-indol-5-yl]imidazo[2,1-b][1,3]thiazole-2-sulfonamide is given. What is its corresponding molecular formula?
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C19H22ClN5O2S2
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