You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 3-methyl-N-[1-([1,2,4]triazolo[4,3-a]pyridin-3-yl)ethyl]butan-2-amine;dihydrochloride into its molecular formula.
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C13H22Cl2N4
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