4-Nitrobenzyl (1R, 5S,6S)-6-[1(R)-t-butyldimethylsilyloxyethyl]-1-methyl-2-[2-(4-nitrobenzyloxycarbonyl)aminoethylthio]-1-carbapen-2-em-3-carboxylate (HCID 11007049)|Huagongshe