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 [(3aS,7aR)-3a-[2-(pyridin-2-ylamino)ethyl]-2,3,4,6,7,7a-hexahydrofuro[3,2-c]pyridin-5-yl]-pyridin-3-ylmethanone is given. What is its corresponding molecular formula?
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C20H24N4O2
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