1-Azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid,6-(1-hydroxyethyl)-4-methyl-7-oxo-3-[[1-[(2-propenyloxy)carbonyl]-5-[2-[[(2-propenyloxy)carbonyl]amino]cyclopropyl]-3-pyrrolidinyl]thio]-,2-propenyl ester [ 137049-19-5 ]