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(R)-4-Acetylamino-5-chloro-2-methyl-2,3-dihydro-benzofuran-7-carboxylic acid benzyl ester
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(+/-)-4-acetylamino-2,3-dihydro-2-methylbenzo[b]furan-7-carboxylic acid
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methyl 4-acetylamino-5-chloro-2-methylbenzofuran-7-carboxylate

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(R)-(+)-4-amino-5-chloro-2,3-dihydro-2-methylbenzo[b]furan-7-carboxylic acid

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(S)-(-)-4-amino-5-chloro-2,3-dihydro-2-methylbenzo[b]furan-7-carboxylic acid