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-N-[4-[4-(N-[7-[[4-(4-benzhydrylphenyl)phenyl]-phenylmethyl]-9,9-bis[6-[(3-methyloxetan-3-yl)methoxy]hexyl]fluoren-2-yl]anilino)phenyl]phenyl]-9,9-dihexyl-2-N,7-N,7-N-triphenylfluorene-2,7-diamine .
user
C128H133N3O4
assistant