You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2,3,5,6,8,9,11,12,19,20-decakis(4-chlorophenyl)hexacyclo[11.5.2.04,17.07,16.010,15.014,18]icosa-1(18),2,4,6,8,10,12,14,16,19-decaene by IUPAC nomenclature, provide its molecular formula.
user
C80H40Cl10
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