Using CC(C)(C)OC(=O)NC(=O)OC(C)(C)C, Cc1ccc(CBr)cc1Br to produce Cc1ccc(CN(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)cc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.