You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[7-(benzenesulfonyl)-9-oxa-3,7-diazabicyclo[3.3.1]nonan-3-yl]-3-phenylbutan-1-one into its molecular formula.
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C22H26N2O4S
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