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 [4-(3,9-diazabicyclo[4.2.1]nonan-3-ylsulfonyl)phenyl]-morpholin-4-ylmethanone is given. What is its corresponding molecular formula?
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C18H25N3O4S
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