You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,4-dichloro-N-[(2S)-4-chloro-1-(4-chlorophenyl)-1-oxobutan-2-yl]-N-[(1S,2R,6R,7S)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]decan-4-yl]benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H22Cl4N2O4
assistant