Using CC1(C)OC(=O)[C@@H](CC=O)O1, CC(C)(C)OC(=O)N1CCC(N)CC1 to produce CC(C)(C)OC(=O)N1CCC(N2CC[C@@H](O)C2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.