(2alpha,3beta,4beta,19alpha)-2,3,19,23-Tetrahydroxyolean-12-en-28-oic acid 2,3,19,23-Tetrahydroxyolean-12-en-28-oic acid 55306-03-1 Olean-12-en-28-oic acid, 2,3,19,23-tetrahydroxy-, (2alpha,3beta,4beta,19alpha)- Sericic acid