Using CC(C)(C)OC(=O)[C@H](N)c1ccccc1, CCOC(=O)CCCBr to produce CCOC(=O)CCCN[C@@H](C(=O)OC(C)(C)C)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.