The molecule is a hydroxy monocarboxylic acid anion that is the conjugate base of mevinolinic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a mevinolinic acid.
(3R,5R)-7-[(1S,2S,6R,8S,8aR)-2,6-dimethyl-8-[(2S)-2-methylbutanoyl]oxy-1,2,6,7,8,8a-hexahydronaphthalen-1-yl]-3,5-dihydroxyheptanoate