You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (4-nitrophenyl)methyl (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-3,7-dioxo-4-phenylmethoxy-1-azabicyclo[3.2.0]heptane-2-carboxylate .
user
C23H22N2O8
assistant