(2S,3R)-2-((2S,3R)-4-((1-(4,5-dihydrothiazol-2-yl)azetidin-3-yl)thio)-3-methyl-5-(((pivaloyloxy)methoxy)carbonyl)-2,3-dihydro-1H-pyrrol-2-yl)-3-hydroxybutanoic acid
(2S,3R)-2-((2S,3R)-4-((1-(4,5-dihydrothiazol-2-yl)azetidin-3-yl)thio)-3-methyl-5-(((pivaloyloxy)methoxy)carbonyl)-2,3-dihydro-1H-pyrrol-2-yl)-3-hydroxybutanoic acid