The molecule is a sesquiterpene lactone isolated from Artemisia rutifolia and Artemisia iwayomogi and has been shown to inhibit nitric oxide synthase. It has a role as a metabolite and an EC 1.14.13.39 (nitric oxide synthase) inhibitor. It is a butan-4-olide, a sesquiterpene lactone, a methyl ketone, a secondary alcohol and an enone.
(4S,5S)-5-[(3S)-3-hydroxy-2-methyl-5-oxocyclopenten-1-yl]-3-methylidene-4-(3-oxobutyl)oxolan-2-one