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system
Name the molecular formula for the molecule established as N-(6-chloro-1,3-benzothiazol-2-yl)-2-[(2R,5R)-4-(furan-2-ylmethyl)-2,5-dimethylpiperazin-1-yl]acetamide using the IUPAC nomenclature.
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C20H23ClN4O2S
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