11-Oxo-3-O-methyloleanata-12-en-2beta,3beta,23-trihydroxy-28-oic acid 140231-40-9 Esculentagenin Olean-12-ene-28,29-dioic acid, 2,3,23-trihydroxy-11-oxo-, 29-methyl ester, (2beta,3beta,4alpha,20beta)-