Using O=C[C@@H](O)[C@H](Cc1ccccc1)N1C(=O)c2ccccc2C1=O, CC(C)(C)NC(=O)[C@@H]1C[C@@H]2CCCC[C@@H]2CN1 to produce CC(C)(C)NC(=O)[C@@H]1C[C@@H]2CCCC[C@@H]2CN1C[C@@H](O)[C@H](Cc1ccccc1)N1C(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.