Synonyms: 217476-76-1;Ganoderic acid beta;Ganoderic acid .beta.;AC1O52OL;Lanosta-8,24-dien-26-oic acid, 3,7-dihydroxy-11,15-dioxo-, (3.beta.,7.beta.,24E)-;Lanosta-8,24-dien-26-oic acid, 3,7-dihydroxy-11,15-dioxo-, (3beta,7beta,24E)-;(E,6R)-6-[(3S,5R,10S,13R,14R,17R)-3-hydroxy-4,4,10,13,14-pentamethyl-11,15-dioxo-2,3,5,6,7,12,16,17-octahydro-1H-cyclopenta[a]phenanthren-17-yl]-2-methylhept-2-enoic acid