Using CCCSC1(C(=O)C=Cc2ccc(Cl)cc2Cl)CC1, COS(=O)(=O)OC to produce CCCSC1(C2(C=Cc3ccc(Cl)cc3Cl)CO2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.