You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 25-(4-cyanophenyl)-7,16-diphenylheptacyclo[18.7.1.02,19.04,17.05,14.08,13.024,28]octacosa-1(28),2,4,6,8(13),9,11,14,16,18,20,22,24,26-tetradecaene-10-carbonitrile by IUPAC nomenclature, provide its molecular formula.
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C48H26N2
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