Synonyms: Urs-12-en-28-oicacid,23,24-[(4,4',5,5',6,6'-hexahydroxy[1,1'-biphenyl]-2,2'-diyl)bis(carbonyloxy)]-2,3-dihydroxy-,3-O-(3,4,5-trihydroxybenzoyl)-b-D-glucopyranosyl ester, [2a,3b,4(R)]-;Spiro[7H-dibenzo[g,i][1,5]dioxacycloundecin-8(9H),4'(1'H)-picene],urs-12-en-28-oic acid deriv.; Castanopsinin Gb