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 N-[[3-(6-tert-butyl-7-chloro-5H-pyrazolo[1,5-b][1,2,4]triazol-2-yl)phenyl]methyl]acetamide is given. What is its corresponding molecular formula?
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C17H20ClN5O
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