You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 11,18-ditert-butyl-N-(9,9-dimethylfluoren-3-yl)-N-(2-phenylphenyl)pentacyclo[20.4.0.02,7.09,14.015,20]hexacosa-1(26),2(7),3,5,9(14),10,12,15(20),16,18,22,24-dodecaen-5-amine is given. What is its corresponding molecular formula?
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C61H57N
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