Complex sentence: Lorenzo's oil is a 4:1 mixture of glycerol trioleate and glycerol trierucate (the triglyceride forms of oleic and erucic acid) used in the preventative treatment of adrenoleukodystrophy (ALD).
Split into simpler sentences: Lorenzo's oil is 4:1 mixture of glycerol trioleate and glycerol trierucate (GTO/GTE), the triglyceride forms of oleic and erucic acid, respectively. It has been used in the preventative treatment of adrenoleukodystrophy (ALD).