Using CC(C)(C)OC(=O)NC(=O)OC(C)(C)C, Cc1cc(CCO)cc(C)c1Br to produce Cc1cc(CCN(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)cc(C)c1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.