Using CC(C)(C)OC(=O)CC(Cc1ccc(-c2ccccc2)cc1)NC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)CC(N)Cc1ccc(-c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.