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 (2S,4S)-2-methyl-N-(6-pyrazol-1-ylpyridin-3-yl)piperidine-4-carboxamide;dihydrochloride is given. What is its corresponding molecular formula?
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C15H21Cl2N5O
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