Provide the molecular formula for the IUPAC named substance 9-(4-carbazol-9-yl-6-spiro[fluorene-9,23'-hexacyclo[12.11.0.02,7.08,13.016,24.017,22]pentacosa-1(25),2,4,6,8,10,12,14,16(24),17(22),18,20-dodecaene]-19'-yl-1,3,5-triazin-2-yl)carbazole .