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-(2,5-difluorophenyl)-2-[(4S)-4-(2,3-dihydro-1,4-benzodioxin-6-yl)-4-methyl-2,5-dioxoimidazolidin-1-yl]acetamide .
user
C20H17F2N3O5
assistant