Using CC1CNCC(C)N1, CC(C)(C)OC(=O)N1CCC(C(=O)O)CC1 to produce CC1CN(C(=O)C2CCN(C(=O)OC(C)(C)C)CC2)CC(C)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.