(2beta,3beta,4alpha,20beta)-29-Methyl 2,3,23-trihydroxyolean-12-ene-28,29-dioate 1802-12-6 Olean-12-ene-28,29-dioic acid, 2,3,23-trihydroxy-, 29-methyl ester, (2beta,3beta,4alpha,20beta)-