76689-93-5 (2R,6bR,9aR,11aR,11bR,12S,12aR)-7,9-bis(acetyloxy)-2-furan-2-yl-5-hydroxy-1,6b,9a,12a-tetramethyl-3,3a,6,6a,6b,7,8,9,9a,10,11a,11b,12,12a-tetradecahydro-2H,5H-cyclopenta[b]furo[2',3',4':4,5]naphtho[2,1-d]oxepin-12-yl (2E)-2-methylbut-2-enoate 76705-48-1 (7Z,11Z)-4,10,13,18-tetrahydroxy-1,3,7,11,20a-pentamethyl-20,21-dioxo-1,2,3,4,4a,6a,9,10,12a,13,16,20,20a,20b-tetradecahydro-16a,19-methanobenzo[b]naphtho[2,1-j]oxacyclotetradecine-15-carbaldehyde