You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [(5R,7S)-5,7-dimethyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-3-yl]-(2-oxa-8-azaspiro[3.5]nonan-8-yl)methanone .
user
C16H23N3O3
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