Using ClC(=Nc1ccc(Cl)cc1)c1ccc(Br)cc1, CCOC(=O)c1nnn(-c2ccccc2)c1N to produce O=c1c2nnn(-c3ccccc3)c2nc(-c2ccc(Br)cc2)n1-c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.