4-(2-Amino-6-hydroxy-9H-purin-9-yl)-2-cyclopentene-1-carboxylic acid
4-(2-Amino-6-hydroxy-9H-purin-9-yl)-2-cyclopentene-1-carboxylic acid ??
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4-(2-Amino-6-hydroxy-9H-purin-9-yl)-2-cyclopentene-1-carboxylic acid C??? ??, ??, ??
4-(2-Amino-6-hydroxy-9H-purin-9-yl)-2-cyclopentene-1-carboxylic acid ?? ?? ? ???
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4-(2-Amino-6-hydroxy-9H-purin-9-yl)-2-cyclopentene-1-carboxylic acid ?? ??
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