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Name the molecular formula for the molecule established as 4,4,5,5-tetramethyl-2-[17'-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)spiro[benzo[c]fluorene-7,14'-tetracyclo[13.4.0.02,7.08,13]nonadeca-1(15),2,4,6,8(13),9,11,16,18-nonaene]-11'-yl]-1,3,2-dioxaborolane using the IUPAC nomenclature.
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C47H44B2O4
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