You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule prop-2-enyl 2-cyano-2-[3-ethyl-5-[(1-methylpyrrol-2-yl)methylidene]-4-oxo-1,3-thiazolidin-2-ylidene]acetate .
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C17H17N3O3S
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