Synonyms: Olean-12-en-28-oicacid,2,3-[(4,4',5,5',6,6'-hexahydroxy[1,1'-biphenyl]-2,2'-diyl)bis(carbonyloxy)]-23,24-dihydroxy-,b-D-glucopyranosyl ester, [2a(R),3b]-; Dibenzo[f,h]piceno[2,3-b][1,4]dioxecin,olean-12-en-28-oic acid deriv.; Castanopsinin Ca