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 3-(3-chloro-2,4,7,8,10-pentazatetracyclo[10.4.0.02,6.07,11]hexadeca-1(16),3,5,9,12,14-hexaen-8-yl)-5-cyclopentyl-1,2,4-oxadiazole into molecular formula.
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C18H16ClN7O
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