You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 9-cyclohexa-1,5-dien-1-yl-15,23-diphenylspiro[1-azaoctacyclo[14.10.2.02,11.03,8.04,25.013,27.020,28.021,26]octacosa-2(11),3(8),4,6,9,13(27),14,16(28),17,19,21(26),22,24-tridecaene-12,9'-fluorene] by IUPAC nomenclature, provide its molecular formula.
user
C57H35N
assistant