1 2ZE (3r,4r,4ar,6as,8r,9r,11as,11bs)-4,9-bis(hydroxymethyl)-4,11b-dimethyltetradecahydro-8,11a-methanocyclohepta[a]naphthale ne-3,9-diol 1.000 2 8JG (7alpha,8alpha,10alpha,13alpha)-7,16-dihydroxykauran-18-oic acid 0.714 3 NE4 (8alpha,9beta,10alpha,13alpha)-kaur-16-en-18-oic acid 0.704