You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[9-[6-[7-(7-tert-butylpyren-1-yl)-9,9-diethylfluoren-2-yl]dibenzofuran-2-yl]pyren-4-yl]-4-pyren-1-yldibenzofuran The above is the IUPAC name of a molecule. Write its molecular formula.
user
C93H62O2
assistant