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 tert-butyl (4aS,8aS)-2,3,4,4a,5,7,8,8a-octahydropyrido[4,3-b][1,4]oxazine-6-carboxylate is given. What is its corresponding molecular formula?
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C12H22N2O3
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