Using COc1ccnc(Cl)n1, O=[N+]([O-])c1ccc(N2CCNCC2)nc1 to produce COc1ccnc(N2CCN(c3ccc([N+](=O)[O-])cn3)CC2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.