1 BM5 (R)-(+) 5(9bh)-oxo-9b-phenyl-2,3-dihydrothiazolo[2,3-a]isoindol-3-carboxylic acid methyl ester 1.000 2 BM1 (R)-(+)9b-(3-methyl)phenyl-2,3-dihydrothiazolo[2,3-a]isoindol-5(9bh)-one 0.792 3 ZS5 (3r,4s,7ar)-5-oxo-7a-phenylhexahydropyrrolo[2,1-B][1,3]thiazole-3-carboxylic acid 0.708