Using COc1cc2c(cc1OC)CN(c1ccc(C(=O)[O-])cn1)CC2, NO to produce COc1cc2c(cc1OC)CN(c1ccc(C(=O)NO)cn1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.