Using CC(N)c1ccccn1, CC(C)(C)OC(=O)N1CCC(=O)CC1 to produce CC(NC1CCN(C(=O)OC(C)(C)C)CC1)c1ccccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.