Using CCOC(=O)C1Oc2cc(Cl)c(S(=O)(=O)c3ccc(Cl)cc3)cc2O1, N to produce NC(=O)C1Oc2cc(Cl)c(S(=O)(=O)c3ccc(Cl)cc3)cc2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.