You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (11S,18R)-11-methyl-5-oxa-13-azaheptacyclo[11.9.1.01,7.07,15.010,23.014,18.018,22]tricosan-4-one using the IUPAC nomenclature.
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C22H31NO2
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