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 7-N'-(6-dimethylsilyldibenzofuran-4-yl)-9,9-dimethyl-2-N',7-N'-bis[3-(trifluoromethyl)phenyl]-2-N'-(6-trimethylsilyldibenzofuran-4-yl)spiro[anthracene-10,9'-fluorene]-2',7'-diamine .
user
C71H56F6N2O2Si2
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