161666-05-3

1-Azabicyclo[3.2.0]hept-2-ene-2-carboxylicacid,6-(1-hydroxyethyl)-3-[[5-[[(2-hydroxyethyl)thio]methyl]-3-pyrrolidinyl]thio]-4-methyl-7-oxo-,[4R-[3(2S*,4S*),4a,5b,6b(R*)]]-