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 6,12,21,27-tetranaphthalen-2-yl-6,12,21,27-tetrazaheptacyclo[26.2.2.22,5.213,16.217,20.17,11.122,26]tetraconta-1(31),2(40),3,5(39),7(38),8,10,13,15,17(35),18,20(34),22,24,26(33),28(32),29,36-octadecaene into molecular formula.
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C76H52N4
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