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 8-[1,4-dimethyl-5-(2-methylpropyl)pyridin-1-ium-2-yl]-2-ethyl-7-methyl-[1]benzofuro[2,3-b]pyridine is given. What is its corresponding molecular formula?
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C25H29N2O+
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