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 N-[(4S)-4-[[(2S,3S)-3-acetamido-4-(4-fluorophenyl)-2-hydroxybutyl]amino]spiro[3,4-dihydropyrano[2,3-b]pyridine-2,1'-cyclobutane]-6-yl]acetamide is given. What is its corresponding molecular formula?
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C25H31FN4O4
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