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 2-[(2-tert-butyl-5-ethylimidazo[1,2-a]pyridin-3-yl)amino]-N-hydroxyacetamide is given. What is its corresponding molecular formula?
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C15H22N4O2
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