Using COC(=O)CBr, CC(C)(C)c1ccccc1N1CCN(C(=O)C2CCC(=O)N2)CC1 to produce COC(=O)CN1C(=O)CCC1C(=O)N1CCN(c2ccccc2C(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.