This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Which of the following agents do not act via GABAA – Cl– channel complex receptors ? 
Select and explain. 
A. Zopiclone, B. Benzodiazepines, C. Thiopentone, D. Promethazine
D: Promethazine
Answer: D: Promethazine 
Explanation: None