Using O=S(=O)(Nc1cccc(CO)c1)c1ccc(-c2ccc(Cl)cc2Cl)cc1 to produce O=Cc1cccc(NS(=O)(=O)c2ccc(-c3ccc(Cl)cc3Cl)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.