Synonyms: 1H,3H-Pyrano[3,4-c]pyran-5-carboxylicacid, 4,4a,8,8a-tetrahydro-8-[[(2E)-6-O-[3-(4-hydroxyphenyl)-1-oxo-2-propenyl]-b-D-glucopyranosyl]oxy]-1-methyl-3-oxo-,(1R,4aS,8S,8aS)- (9CI); 1H,3H-Pyrano[3,4-c]pyran-5-carboxylic acid,4,4a,8,8a-tetrahydro-8-[[6-O-[3-(4-hydroxyphenyl)-1-oxo-2-propenyl]-b-D-glucopyranosyl]oxy]-1-methyl-3-oxo-,[1R-[1a,4aa,8a(E),8aa]]-; Ibotalactone A