Using CC(C)(C)OC(=O)NCC(=O)O, NC(=O)[C@@H]1CCCN1 to produce CC(C)(C)OC(=O)NCC(=O)N1CCC[C@H]1C(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.