Using O=C(O)CCCCCCNc1ccccn1, COC(=O)CC1CNCCc2ccccc21 to produce COC(=O)CC1CN(C(=O)CCCCCCNc2ccccn2)CCc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.