You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 3-[2-[hydroxy-(2-methylpyrazol-3-yl)methyl]-4,6,7,8-tetrahydropyrazolo[1,5-a][1,4]diazepin-5-yl]-N-propan-2-ylpropanamide by IUPAC nomenclature, provide its molecular formula.
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C18H28N6O2
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