Using CCOC(=O)CC(O)[C@H]1[C@H](NC(=O)OC(C)(C)C)[C@@H](OCc2ccccc2)[C@@H](OCc2ccccc2)[C@@H]1OCc1ccccc1 to produce CCOC(=O)CC(O)[C@H]1[C@H](N)[C@@H](OCc2ccccc2)[C@@H](OCc2ccccc2)[C@@H]1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.