(4R,5S,6S)-(2R,3S)-3-((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)-4-oxo-4-((pivaloyloxy)methoxy)butan-2-yl 3-((1-(4,5-dihydrothiazol-2-yl)azetidin-3-yl)thio)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
