[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is the calcium salt of cyanamide, formed when calcium carbide reacts with nitrogen It has a role as a fertilizer. It contains a cyanamide(2-)."}, {"from": "gpt", "value": "[C][=Branch1][C][=N-1][=N-1].[Ca+2]"}]