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 1-[6-(6-methylsulfinyl-3-oxo-2-prop-2-enylpyrazolo[3,4-d]pyrimidin-1-yl)pyridin-2-yl]cyclopropane-1-carbonitrile is given. What is its corresponding molecular formula?
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C18H16N6O2S
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