Using O=C1CNCCN1, CNC(=O)[C@H]1O[C@@H](n2cnc3c(NCc4cc(Cl)ccc4OCC(=O)O)ncnc32)[C@H](O)[C@@H]1N=[N+]=[N-] to produce CNC(=O)[C@H]1O[C@@H](n2cnc3c(NCc4cc(Cl)ccc4OCC(=O)N4CCNC(=O)C4)ncnc32)[C@H](O)[C@@H]1N=[N+]=[N-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.