1 U8D (3-{[3-(2-amino-2-oxoethyl)-1-benzyl-2-ethyl-1h-indol-5-yl]oxy}propyl)phosphonic acid 1.000 2 8IN [3-(1-benzyl-3-carbamoylmethyl-2-methyl-1h-indol-5-yloxy)-propyl-]-phosphonic acid 0.967 3 6IN 4-(1-benzyl-3-carbamoylmethyl-2-methyl-1h-indol-5-yloxy)-butyric acid 0.758 4 I3N 1-benzyl-5-methoxy-2-methyl-1h-indol-3-yl)-acetic acid 0.710