1 SF1 1-benzyl-5-chloro-3-(phenylthio)-1h-indole-2-carboxylic acid 1.000 2 NZA 5-chloro-1-(4-chlorobenzyl)-3-(phenylthio)-1h-indole-2-carboxylic acid 0.964 3 SF2 5-chloro-1-(3-methoxybenzyl)-3-(phenylthio)-1h-indole-2-carboxylic acid 0.931