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 (2Z)-2-cyano-2-[(5Z)-5-[(5-methylthiophen-2-yl)methylidene]-4-oxo-3-phenyl-1,3-thiazolidin-2-ylidene]-N-prop-2-enylacetamide is given. What is its corresponding molecular formula?
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C21H17N3O2S2
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