You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named but-2-yne;5-(11-cyclohexyl-8,14-diphenyl-8,14-diaza-1-borapentacyclo[11.7.1.02,7.09,21.015,20]henicosa-2(7),3,5,9,11,13(21),15,17,19-nonaen-4-yl)-10,10-dimethylbenzo[b][1,4]benzazasiline is given. What is its corresponding molecular formula?
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C54H50BN3Si
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