[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=Branch1][C][=O][Branch1][C][O-1][O-1].[Ca+2]"}, {"from": "gpt", "value": "The molecule is a calcium salt with formula CCaO3. It has a role as an antacid, a food colouring, a food firming agent and a fertilizer. It is a calcium salt, a carbonate salt, a one-carbon compound and an inorganic calcium salt."}]