AJUGARIN I

4-[2-[(1R)-8α-Acetoxy-8aα-acetoxymethyl-3,4,4aβ,5,6,7,8,8a-octahydro-5α,6α-dimethylspiro[naphthalene-1(2H),2'-oxiran]-5-yl]ethyl]furan-2(5H)-one