Using COc1ccc([C@H](CO)NC(=O)[C@H](CCCNC(=O)OCc2ccccc2)NC(=O)OC(C)(C)C)cc1 to produce COc1ccc([C@H](CO)NC(=O)[C@@H](N)CCCNC(=O)OCc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.