You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 18,18'-bis(4-tert-butylphenyl)-15,15',25,25'-tetraphenyl-21,21'-bis(4-phenylphenyl)-11,11'-spirobi[15,21-diaza-1-boraheptacyclo[14.11.1.02,14.04,12.05,10.020,28.022,27]octacosa-2,4(12),5,7,9,13,16,18,20(28),22(27),23,25-dodecaene];18,18'-di(carbazol-9-yl)-15,15',25,25'-tetraphenyl-21,21'-bis(4-phenylphenyl)-11,11'-spirobi[15,21-diaza-1-boraheptacyclo[14.11.1.02,14.04,12.05,10.020,28.022,27]octacosa-2,4(12),5,7,9,13,16,18,20(28),22(27),23,25-dodecaene];18-N,18-N,18-N',18-N',15,15',25,25'-octakis-phenyl-21,21'-bis(4-phenylphenyl)-11,11'-spirobi[15,21-diaza-1-boraheptacyclo[14.11.1.02,14.04,12.05,10.020,28.022,27]octacosa-2,4(12),5,7,9,13,16,18,20(28),22(27),23,25-dodecaene]-18,18'-diamine into molecular formula.
user
C359H242B6N16
assistant