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.

[EX Q]: Serotonin transporter gene regulatory region polymorphism (5-HTTLPR), [3H]paroxetine binding in healthy control subjects and alcohol-dependent patients and their relationships to impulsivity.
[EX A]: [3H]paroxetine

[EX Q]: Oxysterol generation and liver X receptor-dependent reverse cholesterol transport: not all roads lead to Rome.
[EX A]: cholesterol

[EX Q]: Protection of glycyrrhizic acid against AGEs-induced endothelial dysfunction through inhibiting RAGE/NF-κB pathway activation in human umbilical vein endothelial cells.
[EX A]:
glycyrrhizic acid