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 ethyl 2-[2-[2-[[4-[(4-fluorophenyl)methoxy]-3-nitrophenyl]methylidene]hydrazinyl]-1,3-thiazol-4-yl]acetate into molecular formula.
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C21H19FN4O5S
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