You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 5,5',11,11'-tetramethylspiro[1-azapentacyclo[11.7.1.02,7.09,21.015,20]henicosa-2(7),3,5,9(21),10,12,15,17,19-nonaene-14,14'-1-borapentacyclo[11.7.1.02,7.09,21.015,20]henicosa-2(7),3,5,9(21),10,12,15,17,19-nonaene] is given. What is its corresponding molecular formula?
user
C43H34BN
assistant