You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1,1',2,2',3,3',4,4',5,6,6',7,7',8,8'-pentadecadeuterio-5'-[2-(1,3,4,5,6,7,8,9,10,11,12-undecadeuteriotriphenylen-2-yl)phenyl]-9,9'-spirobi[fluorene] is given. What is its corresponding molecular formula?
user
C49H30
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