The molecule is a sesquiterpene lactone that is isolated from Acroptilon repens and displays anti-allergic properties. It has a role as an anti-allergic agent and a plant metabolite. It is a sesquiterpene lactone, an azulenofuran, an epoxide, an olefinic compound, a tertiary alcohol, a secondary alcohol, an organochlorine compound and an organic heterotetracyclic compound.
[(3aR,4S,6aR,8S,9S,9aS,9bS)-8-hydroxy-3,6-dimethylidene-2-oxospiro[3a,4,5,6a,7,8,9a,9b-octahydroazuleno[4,5-b]furan-9,2'-oxirane]-4-yl] (2S)-3-chloro-2-hydroxy-2-methylpropanoate