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 3-(1-ethyl-3-methyl-5-sulfanylidene-4H-imidazo[4,5-c]pyrazol-6-yl)-1-methylpyrrolidine-2,5-dione is given. What is its corresponding molecular formula?
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C12H15N5O2S
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