[{"from": "human", "value": "Describe this molecule. [C][#Branch1][C][#N][N].[Ca+2]"}, {"from": "gpt", "value": "The molecule appears as a colorless to gray, odorless solid. May cause illness from ingestion. May irritate the skin. If exposed to water or high temperatures, calcium cyanamide may generate toxic and flammable fumes. Used to make pesticides and in fertilizers."}]