You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
20,20,21,21,22,22-hexafluoro-2,7,12,17-tetrakis(4-methylphenyl)-24,25,26,27-tetrazahexacyclo[16.5.1.13,6.18,11.113,16.019,23]heptacosa-1,3,5,7,9,11,13(25),14,16,18(24),19(23)-undecaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C51H36F6N4
assistant