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-butanoyl-N-[4-(5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-2-yl)phenyl]piperidine-4-carboxamide is given. What is its corresponding molecular formula?
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C23H30N4O2
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