You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N,4-dimethyl-N-(4-methylphenyl)aniline;ethane;(11E)-11-ethylidene-9-methyl-N,N-bis(4-methylphenyl)-3,13-diphenylhexacyclo[13.7.1.02,14.04,12.05,10.019,23]tricosa-1(23),2,4(12),5,7,9,13,15,17,19,21-undecaen-20-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C69H62N2
assistant