You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[3-(4-chlorophenyl)prop-2-enyl]-8-fluoro-N-[(2-fluoropyridin-4-yl)methyl]-7-(trifluoromethoxy)-3,4-dihydro-1H-pyrido[4,3-b]indole-5-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C28H22ClF5N4O2
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