You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (2S)-2-amino-N-[2-[[1-(dimethylamino)cycloheptyl]methylamino]-2-oxoethyl]-3-methylbutanamide;dihydrochloride by IUPAC nomenclature, provide its molecular formula.
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C17H36Cl2N4O2
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