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 8-methyl-5-[2-[6-methyl-4-(trifluoromethyl)pyridin-3-yl]ethyl]-1,2,3,4-tetrahydropyrido[4,3-b]indole into molecular formula.
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C21H22F3N3
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