Using CC(C)(C)OC(=O)NCC(=O)O, CC(C)(C)OC(=O)[C@@H]1CC[C@H](c2ccccc2)N1 to produce CC(C)(C)OC(=O)NCC(=O)N1[C@@H](c2ccccc2)CC[C@H]1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.