1 R9B N-[(1s)-1-benzyl-2-[(6-chloro-2-oxo-1h-quinolin-4-yl)methylamino]-2-oxo-ethyl]-4-hydroxy-2-oxo-1h-quinoline-6-carbo 1.000 2 XJ8 N-[(1s)-2-[(2-amino-5-quinolyl)methylamino]-1-benzyl-2-oxo-ethyl]-4-hydroxy-2-oxo-1h-quinoline-6-carboxamide 0.833