Using O=C(Nc1cc(-c2ccccc2)ccc1C(=O)O)c1ccc(-c2ccncc2)nc1 to produce O=C(Nc1cc(-c2ccccc2)ccc1C(=O)[O-])c1ccc(-c2ccncc2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.