You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 9,18,22-triphenyl-9,17,19,22-tetrazapentacyclo[11.9.0.02,10.03,8.016,21]docosa-1(13),2(10),3,5,7,11,16(21),19-octaene by IUPAC nomenclature, provide its molecular formula.
user
C36H28N4
assistant