The molecule is a sesquiterpene lactone obtained by regioselective Bayer-Villiger oxidation of 1-deoxy-11-oxopentalenic acid. It has a role as a bacterial metabolite. It is a sesquiterpene lactone, an organic heterotricyclic compound and an alpha,beta-unsaturated monocarboxylic acid. It is a conjugate acid of a pentalenolactone D(1-).
(1S,4aR,6aS,9aR)-1,8,8-trimethyl-2-oxo-1,4,4a,6a,7,9-hexahydropentaleno[1,6a-c]pyran-5-carboxylic acid