You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name N-[(2S,3S)-1-(3-fluorophenyl)-3-hydroxy-4-[[(4S)-6-[(2S)-3,3,3-trifluoro-2-methylpropyl]spiro[3,4-dihydropyrano[2,3-b]pyridine-2,1'-cyclobutane]-4-yl]amino]butan-2-yl]acetamide ?
user
C27H33F4N3O3
assistant