Using CS(C)(=O)=O, COC(=O)c1cc(OC)c(N(C)C(C)=O)c(OC)c1 to produce COc1cc(C(=O)CS(C)(=O)=O)cc(OC)c1N(C)C(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.