Using Nc1ccccc1N, O=Cc1n[nH]c2cc(C(=O)O)ccc12 to produce O=C(O)c1ccc2c(-c3nc4ccccc4[nH]3)n[nH]c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.