Using CC(C)(C)OC(=O)NCC(=O)O, CC(N)(Cc1ccccc1)c1ccccc1 to produce CC(C)(C)OC(=O)NCC(=O)NC(C)(Cc1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.