Using CC(C)(C)OC(=O)NCCBr, CCOc1cc(-c2ccc(O)cc2)n(-c2ccc(OC)cc2)n1 to produce CCOc1cc(-c2ccc(OCCNC(=O)OC(C)(C)C)cc2)n(-c2ccc(OC)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.