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 3-formyl-2-[(4-methoxyphenyl)methyl]-5-methylimidazo[1,2-a]pyridine-6-carbonitrile is given. What is its corresponding molecular formula?
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C18H15N3O2
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