TASK DEFINITION: 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.
PROBLEM: Liver X Receptors and female reproduction: when cholesterol meets fertility!

SOLUTION: cholesterol

PROBLEM: Doxorubicin decreases paraquat accumulation and toxicity in Caco-2 cells.

SOLUTION: paraquat

PROBLEM: Binding of (-)-[3H]-CGP12177 at two sites in recombinant human beta 1-adrenoceptors and interaction with beta-blockers.

SOLUTION:
(-)-[3H]-CGP12177