Using O=C([O-])c1ccc(Nc2nccc(-c3ccccc3)n2)c(Cl)c1, N to produce NC(=O)c1ccc(Nc2nccc(-c3ccccc3)n2)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.