You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 13-(3-diphenylphosphorylphenyl)-12-azahexacyclo[12.12.0.02,11.03,8.015,20.021,26]hexacosa-1(14),2(11),3,5,7,9,12,15,17,19,21,23,25-tridecaene ?
user
C43H28NOP
assistant