Using COc1ccc(O)c2c1C(C)(C)CCC2(C)C, O=C(Cl)c1ccccc1 to produce COc1cc(Cc2ccccc2)c(O)c2c1C(C)(C)CCC2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.