(4R)-2-[(4-bromo-2-fluorophenyl)methyl]-6-fluorospiro[isoquinoline-4,3'-pyrrolidine]-1,2',3,5'-tetrone (4R)-2-[(4-bromo-2-fluoro-phenyl)methyl]-6-fluoro-spiro[isoquinoline-4,3'-pyrrolidine]-1,2',3,5'-tetrone (4R)-2-(4-bromo-2-fluoro-benzyl)-6-fluoro-spiro[isoquinoline-4,3'-pyrrolidine]-1,2',3,5'-diquinone 2[4-BROMO-2-FLUOROPHENYL)METHYL]-6-FLUOROSPIRO[ISOQUINOLINE-4-(1H),3'-PYRROLIDINE]-1,2',3,5'(2H)-TETRONE BFI