Using CCOC(C)=O, O=C(c1cc2cc(Br)cc(Cl)c2[nH]1)N1CCC(F)(F)CC1 to produce COC(=O)c1cc(Cl)c2[nH]c(C(=O)N3CCC(F)(F)CC3)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.