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1-(1-苯并噻吩-2-基)-2-溴-1-乙酮
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4-(2'-benzothienyl)-2-ethoxycarbonyl-4-oxobutanoic acid

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ethyl 4-(2'-benzothienyl)-2-ethoxycarbonyl-4-oxobutanoate

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丁二酸酐

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苯并噻吩