(2'R,2S,3R,4S)-5-[2'-methoxy-2'-(trifluoromethyl)phenylacetoxy]-2,3,4-trimethyl-3,4-methylenedioxypentanoic acid

(R)-2-((4R,5R)-5-((((1R,7aR)-1-hydroxy-2,3,5,7a-tetrahydro-1H-pyrrolizin-7-yl)methoxy)carbonyl)-4,5-dimethyl-1,3-dioxolan-4-yl)propanoic acid