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 N-(4,5-dimethyl-1,3-thiazol-2-yl)-5-(4-hydroxybut-1-ynyl)pyridine-2-carboxamide is given. What is its corresponding molecular formula?
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C15H15N3O2S
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