You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-N,23-N-bis(4-fluorophenyl)-9-N,23-N-diphenyl-14,28-dioxaheptacyclo[15.11.0.03,15.04,13.06,11.018,27.020,25]octacosa-1(17),2,4(13),5,7,9,11,15,18(27),19,21,23,25-tridecaene-9,23-diamine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C50H30F2N2O2
assistant