You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 17-ethyl-15,16-diazapentacyclo[10.7.1.02,7.08,20.014,19]icosa-1(20),2,4,6,8,10,12,14(19),15,17-decaene into its molecular formula.
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C20H14N2
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