Using Cc1oc(C=O)cc1C(O)c1ccc2c(c1)C(C)(C)CCC2(C)C to produce Cc1oc(C=O)cc1Cc1ccc2c(c1)C(C)(C)CCC2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.