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What is the molecular formula of the compound with this IUPAC name 2-[5-[2-(2-chloro-3,4-dimethoxyphenyl)ethenyl]-2-oxo-1,3,4-oxadiazol-3-yl]-N-(4-fluoro-3-methoxyphenyl)acetamide ?
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C21H19ClFN3O6
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