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 2-[(2R,3R,6R)-3-(1,3-benzodioxol-5-yl)-1,5-diazatricyclo[5.2.2.02,6]undecan-5-yl]-2-oxo-N-propylacetamide is given. What is its corresponding molecular formula?
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C21H27N3O4
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