1 XBR 3-(1-(4-chlorophenyl)-3,4-dihydro-1h-pyrido(3,4-B)indol-2(9h)-yl)propanoic acid 1.000 2 L31 3-[(1r)-2-acetyl-6-methyl-2,3,4,9-tetrahydro-1h-beta-carbolin-1-yl]phenol 0.750 3 57Q 3-(2-phenyl-1h-indol-1-yl)propanoic acid 0.731