24-Norchola-20,22-diene-4-carboxaldehyde, 3,12-bis(acetyloxy)-21,23-epoxy-1,7,19-trihydroxy-4,8-dimethyl-11,15-dioxo-, cyclic 4,19-hemiacetal, (1alpha,3alpha,4beta,5alpha,7alpha,12alpha,13alpha,17alpha)- 97871-44-8 Isochuanliansu