You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(1S,5R)-1-(4-methylphenyl)-3-azabicyclo[3.1.0]hexan-3-yl]-(2-oxa-7-azaspiro[4.4]nonan-9-yl)methanone into its molecular formula.
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C20H26N2O2
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