You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (1S,5R)-7-[4-(4-chlorophenyl)butanoyl]-9-methyl-3-oxa-7,9-diazabicyclo[3.3.2]decan-10-one is given. What is its corresponding molecular formula?
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C18H23ClN2O3
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