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 2-[2-bromo-3-(1,3-dioxoisoindol-2-yl)-4-oxoazetidin-1-yl]-3-methylbut-2-enoic acid .
user
C16H13BrN2O5
assistant