(3S,5S)-1-(4-nitrobenzyloxycarbonyl)-3-thioacetyl-5-[4-(3-(4-nitrobenzyloxycarbonyl)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxo-7-quinolinyl)-N-(3S)aminopyrrolidinyl]-carbonylpyrrolidine

1-Cyclopropyl-6,8-difluoro-7-((S)-3-{[(2S,4S)-4-mercapto-1-(4-nitro-benzyloxycarbonyl)-pyrrolidine-2-carbonyl]-amino}-pyrrolidin-1-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid 4-nitro-benzyl ester