Using CCOC(=O)C[C@H]1O[C@H](c2ccccn2)c2cc(Br)ccc2N(CC(C)(C)C)C1=O to produce CC(C)(C)CN1C(=O)[C@@H](CC(=O)O)O[C@H](c2ccccn2)c2cc(Br)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.