Using CCOC(=O)Nc1cc(Cl)ccc1C#N, O=C(CBr)c1ccccc1 to produce CCOC(=O)n1c(C(=O)c2ccccc2)c(N)c2ccc(Cl)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.