Using O=S(=O)(Cl)CCCCl, COC(=O)C(OC)c1ccc(N)cc1 to produce COC(=O)C(OC)c1ccc(NS(=O)(=O)CCCCl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.