Using CC(C)(C)OC(=O)N1CC(=O)N(c2ccccc2O)CC1(C)C, COCCCBr to produce COCCCOc1ccccc1N1CC(C)(C)N(C(=O)OC(C)(C)C)CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.