Using Nc1cc(F)cc(F)c1, O=C1NC(=O)C(c2cccc(F)c2F)=C1Cl to produce O=C1NC(=O)C(c2cccc(F)c2F)=C1Nc1cc(F)cc(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.