Using O=C1CC2CCc3ccc(Cl)cc3C2=NN1c1ccc([N+](=O)[O-])cc1 to produce Nc1ccc(N2N=C3c4cc(Cl)ccc4CCC3CC2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.