Using CCOC(=O)C(CC(Cc1ccc2cccc(OCCOC)c2c1)C(C)C)NC(=O)OC(C)(C)C to produce COCCOc1cccc2ccc(CC(CC(CO)NC(=O)OC(C)(C)C)C(C)C)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.