Using CS(=O)(=O)Cl, COC(=O)c1cc(CN)ccc1CN(Cc1ncccc1C)Cc1ncccc1C to produce COC(=O)c1cc(CNS(C)(=O)=O)ccc1CN(Cc1ncccc1C)Cc1ncccc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.