The molecule is a sesquiterpene lactone and an organic heterotricyclic compound that is 2,3,3a,4,5,6,6a,9,9a,9b-decahydroazuleno[4,5-b]furan substituted by an acetoxy group at position 4, hydroxy groups at positions 6 and 9, methyl groups at positions 6 and 9, a methylidene group at position 3 and an oxo group at position 2. It is a guaianolide isolated from Chrysanthemum boreale and has been shown to exhibit cytotoxic activity against human cancer cell lines. It has a role as a metabolite and an antineoplastic agent. It is a sesquiterpene lactone, an organic heterotricyclic compound, an acetate ester, a tertiary alcohol and a gamma-lactone.
[(3aR,4S,6R,6aR,9R,9aS,9bS)-6,9-dihydroxy-6,9-dimethyl-3-methylidene-2-oxo-3a,4,5,6a,9a,9b-hexahydroazuleno[4,5-b]furan-4-yl] acetate