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.
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Question: Enhancement of radiosensitivity by topoisomerase II inhibitor, amrubicin and amrubicinol, in human lung adenocarcinoma A549 cells and kinetics of apoptosis and necrosis induction.

Answer: amrubicin


Question: Liver X Receptors and female reproduction: when cholesterol meets fertility!

Answer: cholesterol


Question: A phase 1 study of tazarotene in adults with advanced cancer.

Answer:
tazarotene