Using O=C(O)CC1CCC(=O)CC1, CC(C)(C)OC(=O)N1CCNCC1 to produce CC(C)(C)OC(=O)N1CCN(C2CCC(CC(=O)O)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.