1 IMX [(1r,2r)-2-{[(5-fluoro-1h-indol-2-yl)carbonyl]amino}-2,3-dihydro-1h-inden-1-yl]acetic acid 1.000 2 IPX 4-[(1r,2r)-2-{[(5-fluoro-1h-indol-2-yl)carbonyl]amino}-2,3-dihydro-1h-inden-1-yl]butanoic acid 0.800