Using CCCCCC1(CCCCC)Cc2c(cc(C(C)(C)C)c(O)c2C(C)(C)C)O1 to produce CCCCCC1(CCCCC)Cc2cc(O)c(C(C)(C)C)cc2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.