This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'The molecule, which is the intiator of cataract formation in the eye lens and whose 1- phosphate derivative is responsible for liver failure, is: \nSelect and explain. \nA. Sorbitol, B. Mannitol, C. Inositol, D. Galacticol', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Galactitol', 'role': 'assistant'}]