Using CCOC(=O)C1=Cc2ccsc2S(=O)(=O)N1c1cccc(OC)c1 to produce COc1cccc(N2C(CO)=Cc3ccsc3S2(=O)=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.