Using COc1ccc2[nH]c3c(c2c1)CC(NC(=O)C(C)C)CC3, Clc1ccccc1CBr to produce COc1ccc2c(c1)c1c(n2Cc2ccccc2Cl)CCC(NC(=O)C(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.