Using O=C(O)COc1ccc(Br)cc1Cl, NC(=O)c1cccc(N)c1 to produce NC(=O)c1cccc(NC(=O)COc2ccc(Br)cc2Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.