You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-chloro-N-[(1R,2S,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]-N-[2-(3-methoxyphenyl)-2-oxoethyl]benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H21ClN2O5
assistant