Pravastatin Related Compound B – sodium (3R,5R)-3,5-dihydroxy-7-[(1S,2S,6R,8S,8aR)-6-hydroxy-2-methyl-8-[[(2S)-2-methylbutanoyl]oxy]1,2,6,7,8,8a-hexahydronaphthalen-1-yl]heptanoate