You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S)-2-amino-N-[2-[cyclopropyl(methyl)amino]ethyl]-3,3-dimethylbutanamide;dihydrochloride by IUPAC nomenclature, provide its molecular formula.
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C12H27Cl2N3O
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