The molecule is a diterpene lactone isolated from the whole plant of Ajuga ciliata. It has a role as a plant metabolite. It is a butenolide, an acetate ester, a diterpene lactone and a spiro-epoxide.
[(1S)-2-[(1S,2R,4S,4aR,5R,8R,8aR)-4-acetyloxy-4a-(acetyloxymethyl)-1,2-dimethyl-8-[(E)-2-methylbut-2-enoyl]oxyspiro[3,4,6,7,8,8a-hexahydro-2H-naphthalene-5,2'-oxirane]-1-yl]-1-(5-oxo-2H-furan-3-yl)ethyl] (2S)-2-methylbutanoate