3,4-seco-8-(14-13R)abeo-17,13-friedo-9beta-lanosta-4(28),7,14,24-tetraen-26,23-olide-23-hydroxy-3-oic acid
3,4-seco-8-(14-13r)abeo-17,13-friedo-9beta-lanosta-4(28),7,14,24-tetraen-26,23-olide-23-hydroxy-3-oic acid