68961-02-4 (2aS,3S,5R,8aα,8bα)-Decahydro-5aβ-acetoxymethyl-2a,7α-dimethyldispiro[furan-3(2H),2(5H)-furan-5,6-[6H]naphtho[1,8-bc]furan]-2,5(2aH,4H)-dione 18530-11-5 (2S,11aR)-2β,5β,6α,11β-Tetraacetoxy-2,3,4,4a,5,6,10,11-octahydro-4aα,7α,12,12-tetramethyl-1-methylene-7H-6aα,10α-methano-1H-benz[c]azulen-8(9H)-one