Butanoic acid, 2-hydroxy-2-methyl-3-oxo-, (3aR,4R,6aR,8S,9aR,9bR)-8-(β-D-glucopyranosyloxy)dodecahydro-3,6,9-tris(methylene)-2-oxoazuleno[4,5-b]furan-4-yl ester, (2R)-
Butanoic acid, 2-hydroxy-2-methyl-3-oxo-, 8-(β-D-glucopyranosyloxy)dodecahydro-3,6,9-tris(methylene)-2-oxoazuleno[4,5-b]furan-4-yl ester, [3aR-[3aα,4β(R*),6aα,8β,9aα,9bβ]]-
Azuleno[4,5-b]furan, butanoic acid deriv.