Using O=c1[nH]nc(-c2ccc(Cl)cc2)n1C[C@H](O)C(F)(F)F, COC(=O)c1ccc(Br)cc1CBr to produce COC(=O)c1ccc(Br)cc1Cn1nc(-c2ccc(Cl)cc2)n(C[C@H](O)C(F)(F)F)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.