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 6-[4-(4-cyanophenyl)-3-oxo-1H-pyrazol-2-yl]-N-propan-2-ylpyridine-3-carboxamide is given. What is its corresponding molecular formula?
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C19H17N5O2
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