You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5',5'-dimethylspiro[fluorene-9,30'-nonacyclo[16.14.1.12,13.04,12.06,11.022,33.023,31.024,29.017,34]tetratriaconta-1(32),2,4(12),6,8,10,13,15,17(34),18(33),19,21,23(31),24,26,28-hexadecaene] by IUPAC nomenclature, provide its molecular formula.
user
C48H30
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