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 1'-(1-methoxypropan-2-yl)spiro[1,4-dihydroquinoxaline-3,4'-piperidine]-2-one is given. What is its corresponding molecular formula?
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C16H23N3O2
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