141818-15-7

1-Azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid,6-[1-[[4,5-bis(2-propenyloxy)-2-pyridinyl]methoxy]ethyl]-4-methyl-7-oxo-3-[[1-[(2-propenyloxy)carbonyl]-3-pyrrolidinyl]thio]-, 2-propenyl ester