You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule [5-[(3,5-dimethylpyrazol-1-yl)methyl]furan-2-yl]-(3-hydroxy-3-methyl-7-azaspiro[3.5]nonan-7-yl)methanone ?
user
C20H27N3O3
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