(5xi,6beta,11alpha,13alpha)-6,9,11-trihydroxy-6,20-epoxypimara-8(14),15-diene-7,20-dione 9H-10,4a-(epoxymethano)phenanthrene-9,12-dione, 7-ethenyl-1,2,3,4,4b,5,6,7,10,10a-decahydro-4b,5,10-trihydroxy-1,1,7-trimethyl-, (4aR,4bR,5R,7R,10S)- 9alpha,11alpha-dihydroxy-7-oxopimara-8(14),15-dien-20-oic acid 6,20-lactone InChI=1/C20H26O6/c1-5-17(4)9-11-13(22)20(25)14-16(2,3)7-6-8-18(14,15(23)26-20)19(11,24)12(21)10-17/h5,9,12,14,21,24-25H,1,6-8,10H2,2-4H3/t12-,14?,17-,18+,19+,20-/m1/s Sphaeropsidin D