Using COC(=O)C1=Cc2ccsc2S(=O)(=O)N1c1ccc(OC)cc1 to produce COc1ccc(N2C(CO)=Cc3ccsc3S2(=O)=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.