Synonyms: Barlerin;cyclopenta[c]pyran-4-carboxylic acid, 7-(acetyloxy)-1-(beta-D-glucopyranosyloxy)-1,4a,5,6,7,7a-hexahydro-5-hydroxy-7-methyl-, methyl ester, (1S,4aS,5R,7S,7aS)-;Methyl (1S,4aS,5R,7S,7aS)-7-acetoxy-1-(beta-D-glucopyranosyloxy)-5-hydroxy-7-methyl-1,4a,5,6,7,7a-hexahydrocyclopenta[c]pyran-4-carboxylate