[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is dianion of 3-aci-nitropropanoic acid arising from deprotonation of carboxy and nitro groups; major species at pH 7.3. It is a conjugate base of a 3-aci-nitropropanoic acid."}, {"from": "gpt", "value": "[C][Branch1][#Branch1][C][=N+1][Branch1][C][O-1][O-1][C][=Branch1][C][=O][O-1]"}]