Using CC(=O)O, CC(C)(C)NS(=O)(=O)c1sccc1C(=O)CCl to produce CC(=O)OC(CCl)c1ccsc1S(=O)(=O)NC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.