Using O=S(Cl)Cl, O=C(O)c1ccc(Cl)c(S(=O)(=O)NC2CCCCC2)c1 to produce O=C(Cl)c1ccc(Cl)c(S(=O)(=O)NC2CCCCC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.