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-[(2R,3S)-1-(5-chloro-2-methylphenyl)-2-(4-ethoxyphenyl)-4-oxoazetidin-3-yl]-4-nitroisoindole-1,3-dione .
user
C26H20ClN3O6
assistant