Using CCN=C=NCCCN(C)C, CC(C)(C)OC(=O)N[C@@H](Cc1ccc([N+](=O)[O-])cc1)C(=O)O to produce CCOC(=O)[C@H](Cc1ccc([N+](=O)[O-])cc1)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.