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system
Name the molecular formula for the molecule established as 2-[3-(4-fluorophenyl)-6-oxopyridazin-1-yl]-N-[[2-(furan-2-yl)-4-methyl-1,3-thiazol-5-yl]methyl]acetamide using the IUPAC nomenclature.
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C21H17FN4O3S
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