You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[4-[1-(3,4-difluorophenyl)-4-(furan-2-ylmethylsulfanyl)-2,5-dioxopyrrol-3-yl]phenyl]acetamide by IUPAC nomenclature, provide its molecular formula.
user
C23H16F2N2O4S
assistant