Using COCOc1c(NC(=O)Nc2ccccc2)cc(OC)cc1C(C)(C)C to produce COc1cc(NC(=O)Nc2ccccc2)c(O)c(C(C)(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.