You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 6-(10-dibenzothiophen-2-ylanthracen-9-yl)-9-phenyl-2-spiro[fluorene-9,2'-tetracyclo[5.3.1.03,9.05,9]undecane]-2-ylcarbazole .
user
C67H47NS
assistant