You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-[2-[12-fluoro-11-methoxy-6-(trifluoromethyl)-5,8,10-triazatricyclo[7.4.0.02,7]trideca-1(13),2(7),3,5,9,11-hexaen-8-yl]ethyl]morpholine by IUPAC nomenclature, provide its molecular formula.
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C18H18F4N4O2
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