You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[9-(4-fluorophenyl)-9-phenylfluoren-2-yl]-1,3-benzoxazole;2-[4-[9-(4-fluorophenyl)-9-phenylfluoren-4-yl]phenyl]-1,3-benzoxazole;2-[4-(9-phenyl-9-pyridin-2-ylfluoren-4-yl)phenyl]-1,3-benzoxazole;2-(9-phenyl-9-quinolin-3-ylfluoren-2-yl)-1,3-benzoxazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C142H90F2N6O4
assistant