Using COC(=O)CC1NCCc2ccccc21, O=S(=O)(Cl)c1ccc(Cl)c(Cl)c1 to produce COC(=O)CC1c2ccccc2CCN1S(=O)(=O)c1ccc(Cl)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.