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-[(3S)-3-methyl-5-(5-methylsulfanylpyrimidin-2-yl)pentyl]-1,3-benzothiazole-6-carboxylate is given. What is its corresponding molecular formula?
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C21H25N3O2S2
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