You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (7S)-N-cyclobutyl-5-[(1S,2R)-2-methylcyclopropanecarbonyl]-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazine-7-carboxamide into molecular formula.
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C16H22N4O2
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