Using COc1ccc(C2=C(c3ccc(S(C)(=O)=O)cc3)OC(C)(C)C2=O)cc1 to produce CC1(C)OC(c2ccc(S(C)(=O)=O)cc2)=C(c2ccc(O)cc2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.