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-[5-(2,4-difluorophenyl)-1,3-oxazol-2-yl]-N-[2-(ethylamino)ethyl]propanamide;dihydrochloride into its molecular formula.
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C16H21Cl2F2N3O2
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