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 N-[[2-(2,6-dioxopiperidin-3-yl)-1-oxo-3H-isoindol-5-yl]methyl]-2,2-difluoro-2-(3-methoxyphenyl)acetamide .
user
C23H21F2N3O5
assistant