2alpha,3beta,13-Trihydroxystemodane 8,11a-methano-11aH-cyclohepta[a]naphthalene-2,3,9-triol, tetradecahydro-4,4,9,11b-tetramethyl-, (4aR,6aS,8S,9S,11aR,11bS)- InChI=1/C20H34O3/c1-17(2)15-6-5-12-9-13-10-20(12,8-7-19(13,4)23)18(15,3)11-14(21)16(17)22/h12-16,21-23H,5-11H2,1-4H3/t12-,13-,14?,15-,16?,18-,19-,20+/m0/s rel-(4aR,6aS,8S,9S,11aR,11bS)-4,4,9,11b-tetramethyltetradecahydro-8,11a-methanocyclohepta[a]naphthalene-2,3,9-triol