Using CCCCI, O=C(OCc1ccccc1)N1CCC(N2CCNC2=O)CC1 to produce CCCCN1CCN(C2CCN(C(=O)OCc3ccccc3)CC2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.