Using CC(C)(C)OC(=O)c1ccc(CBr)cc1, CCOC(=O)CN(C)C to produce CCOC(=O)C(Cc1ccc(C(=O)OC(C)(C)C)cc1)N(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.