Using COc1c2c(c(NS(C)(=O)=O)n(C)c1=O)CCN(Cc1ccc(F)c(Cl)c1)C2=O, CI to produce COc1c2c(c(N(C)S(C)(=O)=O)n(C)c1=O)CCN(Cc1ccc(F)c(Cl)c1)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.