2-(Hexopyranosyloxy)-1a-(hydroxymethyl)octahydrooxireno[2',3':4,5]cyclopenta[1,2-c]pyran-6-yl 1-(hexopyranosyloxy)-7-methyl-1,4a,5,6,7,7a-hexahydrocyclopenta[c]pyran-4-carboxylate AIDS-142656 AIDS142656 NSC660034 Radiatoside E