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-([1]benzofuro[3,2-b]carbazol-11-yl)-3-[2-([1]benzofuro[3,2-b]carbazol-11-yl)phenyl]benzonitrile .
user
C49H27N3O2
assistant