You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(4-dibenzothiophen-1-ylphenyl)-N-spiro[benzo[c]fluorene-7,9'-fluorene]-5-ylspiro[1-azapentacyclo[10.7.1.02,7.08,20.014,19]icosa-2,4,6,8(20),9,11,14,16,18-nonaene-13,9'-fluorene]-4'-amine;N-[4-(9-phenylcarbazol-3-yl)phenyl]-N-spiro[benzo[c]fluorene-7,9'-fluorene]-5-ylspiro[1-azapentacyclo[10.7.1.02,7.08,20.014,19]icosa-2,4,6,8(20),9,11,14,16,18-nonaene-13,9'-fluorene]-4'-amine;N-(2-phenylphenyl)-N-spiro[benzo[c]fluorene-7,9'-fluorene]-5-ylspiro[1-azapentacyclo[10.7.1.02,7.08,20.014,19]icosa-2,4,6,8(20),9,11,14,16,18-nonaene-13,9'-fluorene]-4'-amine .
user
C234H141N7S
assistant