A GABAA receptor agonist whose potency varies depending on the receptor subunit composition (partial agonist at α1β2γ2 (ED50 = 143 μM), full agonist at α5 (ED50 = 28-129 μM), and super agonist at α4β3δ (ED50 = 6 μM)); acts as an antagonist at ?1 GABAC receptors (IC50 = 25 μM).