[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a saline laxative that is thought to work by increasing fluid in the small intestine. It usually results in a bowel movement after 30 minutes to 6 hours."}, {"from": "gpt", "value": "[O][P][=Branch1][C][=O][Branch1][C][O][O-1].[Na+1]"}]