[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule appears as red-brown crystals to gray granular lumps. It reacts with water to form calcium hydroxide and phosphine, a flammable poisonous gas. Phosphine will normally ignite spontaneously in contact with air. If there is an excess of water this fire of phosphine will not normally ignite surrounding combustible material."}, {"from": "gpt", "value": "[P-3].[P-3].[Ca+2].[Ca+2].[Ca+2]"}]