Synonyms: Butanoicacid, 2,2-dimethyl-,8-[2-[4-(acetyloxy)tetrahydro-6-oxo-2H-pyran-2-yl]ethyl]-1,2,3,7,8,8a-hexahydro-3,7-dimethyl-1-naphthalenylester, [1S-[1a,3a,7b,8b(2S*,4S*),8ab]]-;4'-Acetylsimvastatin; Simvastatin acetate ester; simvastatin acetate