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. 2021 May 29;98:107831. doi: 10.1016/j.intimp.2021.107831

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Fig. 2 — Chemical structures of favipiravir (6-fluoro-3-hydroxypyrazine-2-carboxamide) and the newly-designed target compound cyanorona-20 ((E)-N-(4-cyanobenzylidene)-6-fluoro-3-hydroxypyrazine-2-carboxamide).