Complex sentence: Defibrotide (Defitelio) is a deoxyribonucleic acid derivative (single-stranded) derived from cow lung or porcine mucosa that is used to treat veno-occlusive disease of the liver of people having had a bone marrow transplant.
Split into simpler sentences: Defibrotide (Defitelio) is a deoxyribonucleic acid derivative (single-stranded) derived from cow lung or porcine mucosa. Defibrotide is used to treat veno-occlusive disease of the liver of people having had a bone marrow transplant.