What is the molecular formula of the compound with this IUPAC name 15-[2-(2,3,4,5,6-pentafluorophenyl)ethyl]-8,10-diphenoxy-15-azatetracyclo[7.7.1.02,7.013,17]heptadeca-1(17),2,4,6,8,10,12-heptaene-14,16-dione ?