Using CCOC(=O)c1c[nH]nn1, CC(C)(C)OC(=O)N1CCC(O)CC1 to produce CCOC(=O)c1cnn(C2CCN(C(=O)OC(C)(C)C)CC2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.