Using CN(C(=O)OC(C)(C)C)c1cc(F)c(F)cc1N(C)C(=O)c1cnccc1Oc1cc(Cl)ccc1Cl to produce CNc1cc(F)c(F)cc1N(C)C(=O)c1cnccc1Oc1cc(Cl)ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.