You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[3-[[5-[(2S,5R)-6-hydroxy-7-oxospiro[1,6-diazabicyclo[3.2.1]octane-4,1'-cyclopropane]-2-yl]-1,3,4-oxadiazol-2-yl]methyl]cyclobutyl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H29N5O5
assistant