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 2-[4-[[8-(dimethylamino)-2-hydroxy-8-phenyl-1,3-diazaspiro[4.5]decan-3-yl]methyl]triazol-1-yl]acetamide is given. What is its corresponding molecular formula?
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C21H31N7O2
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