Using Cc1cc(Nc2cc(NC(=O)c3c(Cl)cccc3Cl)c([N+](=O)[O-])cn2)nc(C)n1 to produce Cc1cc(Nc2cc(NC(=O)c3c(Cl)cccc3Cl)c(N)cn2)nc(C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.