1 LG7 4-[(7r,7as)-7-hydroxy-1,3-dioxotetrahydro-1h-pyrrolo[1,2-C]imidazol-2(3h)-yl]-1-naphthonitrile 1.000 2 8NH 2-chloro-4-[(7r,7as)-7-hydroxy-1,3-dioxotetrahydro-1h-pyrrolo[1,2-C]imidazol-2(3h)-yl]-3-methylbenzonitrile 0.760