Using CSc1nc(Cl)c(CCC(=O)Nc2c(Cl)cccc2Cl)c(-c2ccc(F)cc2F)n1 to produce CSc1nc(-c2ccc(F)cc2F)c2ccc(=O)n(-c3c(Cl)cccc3Cl)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.