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What is the molecular formula of the compound with this IUPAC name 20-phenyl-2,9,12,20-tetrazaheptacyclo[15.11.0.02,10.03,8.011,16.019,27.021,26]octacosa-1(17),3,5,7,9,11(16),12,14,18,21,23,25,27-tridecaene ?
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C30H18N4
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