Synonyms: Ajugareptansone A;AC1L4I6X;[(1R,4aR,5S,6R,8S,8aR)-8-acetyloxy-8a-(acetyloxymethyl)-5,6-dimethyl-4-oxo-5-[2-(5-oxo-2H-furan-3-yl)ethyl]spiro[2,3,4a,6,7,8-hexahydronaphthalene-1,2'-oxirane]-2-yl] (2S)-2-methylbutanoate;79495-92-4;Butanoic acid, 2-methyl-, (1R,2S,4aR,5S,6R,8S,8aR)-8-(acetyloxy)-8a-((acetyloxy)methyl)-5-(2-(2,5-dihydro-5-oxo-3-furanyl)ethyl)octahydro-5,6-dimethyl-4-oxospiro(naphthalene-1(2H),2'-oxiran)-2-yl ester, (2S)-