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 N-methyl-4-(methylamino)-N-[1-(4-methyl-2-phenyl-1,3-thiazol-5-yl)ethyl]butanamide;dihydrochloride is given. What is its corresponding molecular formula?
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C18H27Cl2N3OS
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