Using CCOC(=O)CC1CCNCC1, CC(C)(C)OC(=O)N[C@@H](CCCNC(=N)N[N+](=O)[O-])C(=O)O to produce CCOC(=O)CC1CCN(C(=O)[C@H](CCCNC(=N)N[N+](=O)[O-])NC(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.