You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (3,7-dimethyl-1-benzofuran-2-yl)-[4-(1H-pyrrolo[2,3-b]pyridin-3-ylsulfonyl)piperazin-1-yl]methanone into molecular formula.
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C22H22N4O4S
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