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 1-(2,2-difluoroethyl)-N-[(1-ethyl-3-methylpyrazol-4-yl)methyl]pyrazol-4-amine;hydrochloride is given. What is its corresponding molecular formula?
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C12H18ClF2N5
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