Using O=C1CCCc2cccnc21, CC(C)(C)OC(=O)N1CCC(N)CC1 to produce CC(C)(C)OC(=O)N1CCC(NC2CCCc3cccnc32)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.