You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[5-(4-cyanophenyl)-3-[4,10-dibenzhydrylidene-7-[1,5-bis[4-[di(propan-2-yl)amino]phenyl]penta-1,4-diyn-3-ylidene]cyclododeca-2,5,8,11-tetrayn-1-ylidene]penta-1,4-diynyl]benzonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C86H64N4
assistant