Using COc1cc(CCNC(=O)[C@@H](NC(=O)OC(C)(C)C)C(C)C)ccc1OCc1ccccc1 to produce COc1cc(CCNC(=O)[C@@H](NC(=O)OC(C)(C)C)C(C)C)ccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.