Using O=C1CC(=O)N(c2ccccc2)c2ccccc2N1, CC(C)CCBr to produce CC(C)CCN1C(=O)CC(=O)N(c2ccccc2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.