106821-51-6 3,4,6,7,8a,8b,9a-heptahydroxy-3-(hydroxymethyl)-6a,9-dimethyl-7-(propan-2-yl)dodecahydro-6,9-methanobenzo[1,2]pentaleno[1,6-bc]furan-8-yl 1H-pyrrole-2-carboxylate 106821-55-0 4,6,7,8a,8b,9a-hexahydroxy-3,6a,9-trimethyl-7-(1-methylethyl)dodecahydro-6,9-methanobenzo[1,2]pentaleno[1,6-bc]furan-8-yl (2Z)-2-(formylamino)-4-oxobut-2-enoate