for the following products
2,2-Dimethylbutanoic acid [3r-[3a,5,5aa,6a(2R*,4R*),7a,9aS*]]-6-[2-[4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]tetrahydro-6-oxo-2H-pyran-2-yl]ethyl]-3,4,5,5a,6,7-hexahydro-7-methyl-2H-3,9a-methano-1-ben and 4a',6'-Anhydro-4-tert-butyldimethylsilyl Simvastatin
