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(A) Docking model for compound 7a with the protoporphyrinogen oxidase active site; (B) docking model for fomesafen with the protoporphyrinogen oxidase active site. The carbon atoms are shown in springgreen (A) and cyan (B); the fluorine atoms are shown in aquamarine (A,B); the oxygen atoms are shown in red (A,B); the chlorine atoms are shown in green (A,B); the nitrogen atoms are shown in blue (A,B); the sulfur atom is shown in yellow (B).
