The molecule is a eudesmane sesquiterpenoid in which the eudesmane skeleton is substituted with an alpha-hydroxy group at C-1 (eudesmane numbering) and a methylidene group at C-4, and includes a lactone ring formed between C-12 and a beta-hydroxy group at C-6. It is isolated from Eunicea sp. and exhibits significant inhibitory effect upon the growth of the malarial parasite Plasmodium falciparum It has a role as a metabolite and an antimalarial. It is a eudesmane sesquiterpenoid, an organic heterotricyclic compound, a gamma-lactone and a secondary alcohol.
(3S,3aS,5aS,6S,9aR,9bR)-6-hydroxy-3,5a-dimethyl-9-methylidene-3a,4,5,6,7,8,9a,9b-octahydro-3H-benzo[g][1]benzofuran-2-one