Using CC(C)(C)[C@H](NC(=O)NCc1ccccc1)C(=O)O, NNCc1ccccc1 to produce CC(C)(C)[C@H](NC(=O)NCc1ccccc1)C(=O)NNCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.