You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-([1]benzofuro[2,3-a]carbazol-12-yl)-5-[3-([1]benzofuro[2,3-a]carbazol-12-yl)-5-cyanophenyl]benzonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C50H26N4O2
assistant