Using COc1ccc2c(c1)CCN(C(C)C)C2Cc1ccc(OCc2ccccc2)cc1 to produce COc1ccc2c(c1)CCN(C(C)C)C2Cc1ccc(O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.