Using NCc1cccnc1, COC(=O)CC(O)c1ccc(C=CC(=O)O)cc1 to produce COC(=O)CC(O)c1ccc(C=CC(=O)NCc2cccnc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.