1 FRA [4-(4-acetylamino-phenyl)-3,5-dioxo-4-aza-tricyclo[5.2.2.0 2,6]undec-1-ylcarbamoyloxy]-acetic acid 1.000 2 O2W Methyl ({[(3ar,4r,7r,7ar)-2-(4-aminophenyl)-1,3-dioxooctahydro-4h-4,7-ethanoisoindol-4-yl]carbamoyl}oxy)acetate 0.765