24-Norchola-20,22-diene-4-carboxaldehyde, 2,3-bis(acetyloxy)-4,8-dimethyl-11,15-dioxo-21,23-epoxy-1,7,19-trihydroxy-, cyclic 4,19-(2-methyl-1-oxopropylacetal), (1-alpha,2-alpha,3-alpha,4-beta(S),5-alpha,7-alpha,13-alpha,17-alpha)- 87617-80-9 Meliatoxin B2