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 7-amino-3-ethyl-2-methyl-5-[methyl-[2-(1-methylpyrazol-3-yl)ethyl]amino]pyrazolo[1,5-a]pyrimidine-6-carbonitrile;ethane is given. What is its corresponding molecular formula?
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C19H28N8
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