You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 1-(pyridin-4-ylmethyl)-6-[3-(trifluoromethyl)phenyl]-2,3-dihydroimidazo[4,5-b]pyridine is given. What is its corresponding molecular formula?
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C19H15F3N4
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