You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-(4-fluorophenyl)-N-[2-(2-methoxyphenyl)ethyl]-2H-imidazo[1,5-a]pyridin-4-ium-3-carboxamide;2,2,2-trifluoroacetate into its molecular formula.
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C25H21F4N3O4
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