You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named tert-butyl N-[1-[2-(3,4-difluorophenyl)-2-oxoethoxy]-3-phenylmethoxypropan-2-yl]carbamate by IUPAC nomenclature, provide its molecular formula.
user
C23H27F2NO5
assistant