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              2-Bromothiophene
              3-Bromothiophene
              3,4-Dibromothiophene
              2-Chlorothiophene
              3-Chlorothiophene
              2-Acetylthiophene
              2,5-DICHLOROTHIOPHENE
              3-Acetylthiophene
              5-Chlor-2-Acetyl Thiophen
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