Using CC1(C)CCC(C)(C)c2cc(C(O)c3cccs3)c(C3OCCO3)cc21 to produce CC1(C)CCC(C)(C)c2cc(Cc3cccs3)c(C=O)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.