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2-aminoterephthalate

dimethyl 2.2`-thiobisacetate

4-Bromo-7-methylisatin

1-Acetyl-5-bromo-7-nitroindoline

5-Nitroindoline

N-Acetylindoline

7-Nitrooxindole

5-Nitrooxindole

N-Acetylindole-3-carboxaldehyde

1-Methyl-5-nitroindole