Using NCCc1ccccn1, COC(=O)c1cc2ccc(C(=O)O)cc2[nH]1 to produce COC(=O)c1cc2ccc(C(=O)NCCc3ccccn3)cc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.