Using C/C(=C\c1ccc(CO)cc1)c1ccc2c(c1)C(C)(C)CCO2 to produce C/C(=C\c1ccc(C=O)cc1)c1ccc2c(c1)C(C)(C)CCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.