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 6-amino-N-(2,3,5,6,7,8-hexahydro-1H-pyrrolizin-1-yl)imidazo[2,1-b][1,3]thiazole-5-sulfonamide is given. What is its corresponding molecular formula?
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C12H17N5O2S2
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