[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is the nitrogen oxoanion formed by loss of a proton from peroxynitrous acid. It has a role as a human metabolite. It is a member of reactive oxygen species, a nitrogen oxoanion and a member of reactive nitrogen species. It is a conjugate base of a peroxynitrous acid."}, {"from": "gpt", "value": "[N][=Branch1][C][=O][O][O-1]"}]