potassium (1R,5R,6S)-2-phenyl-6-<(1R)-1-hydroxyethyl>-1-methylcarbapen-2-em-3-carboxylate

(3S,4S)-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-1-[[(p-nitrobenzyl)oxy]oxalyl]-4-[(R)-1-[[(R)-2-oxopyrrolidin-4-ylthio]carbonyl]ethyl]-2-azetidinone

(1R,5R,6S)-2-<4'-(aminomethyl)phenyl>-6-<(1R)-1-hydroxyethyl>-1-methylcarbapen-2-em-3-carboxylic acid