Simvastatin 6-Oxo Isomer

Chemical Name: 2,2-Dimethylbutanoic acid (1S,7R,8R,8aR)-1,2,6,7,8,8a-hexahydro-3,7-dimethyl- 6-oxo-8-[2-[(2R,4R)-tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl]ethyl]-1-naphthalenyl ester ;