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 ethyl 2-methyl-2-(propan-2-ylamino)-4-(1,2,4-thiadiazol-5-ylsulfanyl)butanoate is given. What is its corresponding molecular formula?
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C12H21N3O2S2
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