You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6-dibenzofuran-3-yl-4-[3-[3-(12',12'-dimethylspiro[cyclohexane-1,6'-indeno[1,2-b]fluorene]-4'-yl)phenyl]phenyl]-2-phenyl-1,2,3,4-tetrahydropyrimidine into molecular formula.
user
C61H50N2O
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