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 1,4-dimethyl-6-morpholin-4-yl-2-oxo-5-[[4-oxo-3-(oxolan-2-ylmethyl)-2-sulfanylidene-1,3-thiazolidin-5-ylidene]methyl]pyridine-3-carbonitrile into molecular formula.
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C21H24N4O4S2
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