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 N-[2-(4-methoxyphenyl)-1-(5-oxo-4H-1,2,4-oxadiazol-3-yl)ethyl]carbamate is given. What is its corresponding molecular formula?
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C16H21N3O5
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