Using COC(=O)c1cc([N+](=O)[O-])c(Cl)cc1NC(=O)Cc1cc(C)cc(C)c1 to produce Cc1cc(C)cc(-c2c(O)c3cc([N+](=O)[O-])c(Cl)cc3[nH]c2=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.