. "(4-Chloro-1H-indol-3-yl)acetic acid" . . . . . . . "4-chloroindole-3-acetic acid" . . . . . . "4-Chloroindole-3-acetic acid" . . . . . . . . "2-(4-Chloro-1H-indol-3-yl)acetic acid" . "4-Chloroindole-3-acetic acid" . . .