Using COc1cc(C)c(C(C)(O)c2ccc(OC)c(C(C)C)c2)c(C)c1 to produce COc1cc(C)c(C(C)c2ccc(OC)c(C(C)C)c2)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.