Using O=C(Cc1ccc(Cl)cc1)Nn1nc(S(=O)(=O)c2cc[n+]([O-])cc2)c2ccccc2c1=O to produce O=C(Cc1ccc(Cl)cc1)Nn1nc(S(=O)(=O)c2ccncc2)c2ccccc2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.