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