Synonyms: NSC611346;Kingiside aglucon;Kingiside aglycone;AC1L77X1;NSC-611346;1H,4-c]pyran-5-carboxylic acid, 4,4a,8,8a-tetrahydro-8-hydroxy-1-methyl-3-oxo-, methyl ester, [1S-(1.alpha.,4a.beta.,8.beta., 8a.beta.)]-;74848-77-4;methyl (4aS,8R,8aS)-8-hydroxy-1-methyl-3-oxo-4,4a,8,8a-tetrahydro-1H-pyrano[3,4-c]pyran-5-carboxylate