(1beta,8xi,13alpha,15R)-8,15-epoxypimarane-1,16-diol 2H-3,5a-methanonaphth[2,1-b]oxepin-4-methanol, dodecahydro-11-hydroxy-3,8,8,11a-tetramethyl-, (3R,4R,7aS,11R,11aS,11bR)- 8,15(R)-Epoxypimarane-1beta,16-diol Ceriopsin D InChI=1/C20H34O3/c1-17(2)8-7-15(22)19(4)13(17)6-10-20-12-18(3,9-5-14(19)20)16(11-21)23-20/h13-16,21-22H,5-12H2,1-4H3/t13-,14+,15+,16-,18+,19-,20?/m0/s