Using COC(=O)N[C@H](C(=O)O)C1CCOCC1, C[C@H]1CC[C@@H](c2ncc(-c3ccc(Br)cc3)[nH]2)N1C(=O)OC(C)(C)C to produce COC(=O)N[C@H](C(=O)N1[C@@H](C)CC[C@H]1c1ncc(-c2ccc(Br)cc2)[nH]1)C1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.