You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-(benzenesulfonyl)-3-[2-chloro-6-[(2-methylpropan-2-yl)oxy]pyridin-4-yl]pyrrolo[2,3-b]pyridine into its molecular formula.
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C22H20ClN3O3S
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