[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a light green, crystalline inorganic compound that produces toxic gases upon heating. Nickel carbonate is used in electroplating, to prepare nickel monoxide, to make colored glass and as a catalyst in the treatment of wastewater. Exposure to this substance can cause severe dermatitis, skin and asthma-like allergies and affects the lungs, kidneys, gastrointestinal tract and neurological system. Nickel carbonate is a known carcinogen and is associated with an increased risk of developing lung and nasal cancers. (NCI05)"}, {"from": "gpt", "value": "[C][=Branch1][C][=O][Branch1][C][O-1][O-1].[Ni+2]"}]