A meroterpenoid fungal metabolite; has insecticidal activity against third instar silkworm larvae (LD50 = 10 μg/g of diet); selectively inhibits the silkworm GABA receptor RDL (IC50 = 1.13 nM) over human α1β2γ2 subunit-containing GABA receptors (IC50 = 1.48 μM)