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 2-[[5-(4-methoxyphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-6-yl]sulfanyl]-N-(5-methyl-1H-pyrazol-3-yl)acetamide is given. What is its corresponding molecular formula?
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C18H17N7O3S
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