Synonyms: Urs-12-en-28-oicacid,3,23-[(4,4',5,5',6,6'-hexahydroxy[1,1'-biphenyl]-2,2'-diyl)bis(carbonyloxy)]-2,24-dihydroxy-,b-D-glucopyranosyl ester, [2a,3b(R),4a]-; 1H-Dibenzo[g,i]piceno[3,4-b][1,5]dioxacycloundecin, urs-12-en-28-oicacid deriv.; Castanopsinin Ab