Using COc1ccc2c(c1)CCNC2, Cc1cc(Br)cc(C)c1NC(=O)CC(C)(C)C to produce COc1ccc2c(c1)CCN(c1cc(C)c(NC(=O)CC(C)(C)C)c(C)c1)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.