Using Nc1ccc(C(=O)c2ccccc2)cc1N, O=Cc1ccc(C(=O)O)o1 to produce O=C(c1ccccc1)c1ccc2nc(-c3ccc(C(=O)O)o3)[nH]c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.