Using CCOc1cc(C(CS(C)(=O)=O)N2C(=O)c3cccc(CN)c3C2=O)ccc1OC, O=C(Cl)CCl to produce CCOc1cc(C(CS(C)(=O)=O)N2C(=O)c3cccc(CNC(=O)CCl)c3C2=O)ccc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.