Using CC(=O)N(CC(C)C)CC(C1CCCCC1)N1CCN(C(=O)OC(C)(C)C)CC1 to produce CC(=O)N(CC(C)C)CC(C1CCCCC1)N1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.