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