Using CCCCOC(=O)C(=O)C(Br)CC, CCO[C@@H]1CN(C(N)=O)CC[C@@H]1NC(=O)OCc1ccccc1 to produce CCOC(=O)c1nc(N2CC[C@H](NC(=O)OCc3ccccc3)[C@H](OCC)C2)oc1CC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.