You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-N,5-N,17-N,17-N,8,14-hexakis-phenyl-11-(triphenyl-lambda4-sulfanyl)-8,14-diaza-1-borapentacyclo[11.7.1.02,7.09,21.015,20]henicosa-2(7),3,5,9,11,13(21),15(20),16,18-nonaene-5,17-diamine by IUPAC nomenclature, provide its molecular formula.
user
C72H53BN4S
assistant