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,3,6-trimethyl-N-piperidin-4-yl-[1,2]oxazolo[5,4-b]pyridine-4-carboxamide;hydrochloride is given. What is its corresponding molecular formula?
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C15H21ClN4O2
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