Using COC(=O)[C@H](N)Cc1ccccc1, Cn1cc(C[C@@H](NC(=O)OC(C)(C)C)C(=O)O)c2ccccc21 to produce COC(=O)[C@@H](Cc1ccccc1)NC(=O)[C@@H](Cc1cn(C)c2ccccc12)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.