You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[[2-[4-(benzenesulfonyl)piperazin-1-yl]acetyl]amino]-4-oxo-5-(2,3,5,6-tetrafluorophenoxy)pentanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H23F4N3O7S
assistant