(4R)-2-(4-bromo-2-fluorobenzyl)-6-fluoro-1H,2'H,5'H-spiro[isoquinoline-4,3'-pyrrolidine]-1,2',3,5'(2H)-tetrone
(4r)-2-(4-bromo-2-fluorobenzyl)-6-fluoro-1h,2'h,5'h-spiro[isoquinoline-4,3'-pyrrolidine]-1,2',3,5'(2h)-tetrone