You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 14,14-dimethyl-7-[10-(9-oxapentacyclo[11.7.0.02,10.03,8.015,20]icosa-1(13),2(10),3,5,7,11,15(20),16,18-nonaen-18-yl)anthracen-9-yl]-9-oxapentacyclo[11.7.0.02,10.03,8.015,20]icosa-1(13),2(10),3(8),4,6,11,15,17,19-nonaene;7-[10-(14,14-diphenyl-9-oxapentacyclo[11.7.0.02,10.03,8.015,20]icosa-1(13),2(10),3(8),4,6,11,15,17,19-nonaen-7-yl)anthracen-9-yl]-9,14-dioxapentacyclo[11.7.0.02,10.03,8.015,20]icosa-1(13),2(10),3(8),4,6,11,15,17,19-nonaene by IUPAC nomenclature, provide its molecular formula.
user
C117H70O5
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