Using CC(C)(C)OC(=O)NCCc1ccc(O)cc1, COC(=O)c1ccccc1CBr to produce COC(=O)c1ccccc1COc1ccc(CCNC(=O)OC(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.