The molecule is a monocarboxylic acid anion resulting from the deprotonation of the carboxylic acid group of pravastatin. It is a conjugate base of a pravastatin.
(3R,5R)-7-[(1S,2S,6S,8S,8aR)-6-hydroxy-2-methyl-8-[(2S)-2-methylbutanoyl]oxy-1,2,6,7,8,8a-hexahydronaphthalen-1-yl]-3,5-dihydroxyheptanoate