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    1-苄基-1H-吲哚-5-甲醛
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    N-甲基-4-哌啶酮
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    trans-2-(p-nitrophenyl)ethenesulfonyl chloride
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    2-hydroxy-2-(4-nitrophenyl)ethanesulfonic acid isopropyl ester
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    2-(4-nitrophenyl)ethenesulfonic acid benzylmethylamide
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