instruction:
In this task, you are given a sentence. You are expected to recognize the name of any form of chemical substances. Although there might be several correct answers, you need to write one of them.
question:
Management of psoriasis: the position of retinoid drugs.
answer:
retinoid


question:
Oxysterol generation and liver X receptor-dependent reverse cholesterol transport: not all roads lead to Rome.
answer:
cholesterol


question:
Site dependent intestinal absorption of darunavir and its interaction with ketoconazole.
answer:

darunavir


