You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
14-(9,9-diphenylfluoren-2-yl)-7,21-di(propan-2-yl)-1-azaheptacyclo[14.10.1.02,11.04,9.012,27.017,26.019,24]heptacosa-2(11),3,5,7,9,12,14,16(27),17(26),18,20,22,24-tridecaene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C57H43N
assistant