[{"from": "human", "value": "Provide a description of this molecule. [O][P][=Branch1][C][=O][Branch1][C][O][O-1].[O][P][=Branch1][C][=O][Branch1][C][O][O-1].[Ca+2]"}, {"from": "gpt", "value": "The molecule is a calcium phosphate. It has a role as a fertilizer."}]