You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 4-isocyano-9-(4-naphthalen-1-ylnaphthalen-1-yl)-15-phenanthren-9-yl-15-azatetracyclo[10.2.1.05,14.08,13]pentadeca-1(14),2,4,6,8,10,12-heptaene into molecular formula.
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C49H28N2
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