Using CCOC(=O)c1cc(OCCCN=[N+]=[N-])cc(C(=O)OCC)n1 to produce [N-]=[N+]=NCCCOc1cc(C(=O)O)nc(C(=O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.