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 2-(3-amino-1-ethylpyrazol-4-yl)sulfonyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-4-ol is given. What is its corresponding molecular formula?
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C12H20N4O3S
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