benzo[b]thiophene-3-carboxylic acid, 4,5,6,7-tetrahydro-2-[[2-(2-nitrophenoxy)acetyl]amino]-, 1-methylethyl ester;Isopropyl 2-{[(2-nitrophenoxy)acetyl]amino}-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate
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