[{"from": "human", "value": "Describe this molecule. [C][Branch1][#Branch1][/C][=N+1][Branch1][C][/O][\\O-1][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an aci-nitro compound resulting from the tautomerisation of the nitro group of 3-nitropropanoic acid. It is a conjugate acid of a 3-(dioxido-lambda(5)-azanylidene)propanoate(2-) and a 3-aci-nitropropanoate. It is a tautomer of a 3-nitropropanoic acid."}]