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 5-bromo-3-[4-(2-methoxyethylsulfonyl)phenyl]-1-methylpyrazolo[3,4-b]pyridine is given. What is its corresponding molecular formula?
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C16H16BrN3O3S
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