Using Nc1cc(Cl)c(S(N)(=O)=O)cc1[N+](=O)[O-], CCOC(=O)C(=O)C(=O)OCC to produce CCOC(=O)c1nc2cc(Cl)c(S(N)(=O)=O)cc2[nH]c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.