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