Using Cc1cc(Cl)ccc1CBr, CCOC(=O)CN=C(c1ccccc1)c1ccccc1 to produce CCOC(=O)C(Cc1ccc(Cl)cc1C)N=C(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.