You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 3-[(6S)-3-[(1S)-1-[4-(6-methoxypyridin-3-yl)phenyl]ethyl]-2-oxo-6-phenyl-1,3-oxazinan-6-yl]propanamide by IUPAC nomenclature, provide its molecular formula.
user
C27H29N3O4
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