You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule [(3S,3aS,6aR)-3-(dimethylamino)-1,1-dioxo-2,3,3a,4,6,6a-hexahydrothieno[2,3-c]pyrrol-5-yl]-(2-amino-1,3-benzothiazol-5-yl)methanone into molecular formula.
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C16H20N4O3S2
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