You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-(3,5-dimethylpiperazin-1-yl)-2-[(1-phenyltetrazol-5-yl)amino]butan-1-one;dihydrochloride into its molecular formula.
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C17H27Cl2N7O
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