ETHYL 6-AMINO-5-CYANO-4-(2,3-DIHYDRO-1-BENZOFURAN-5-YL)-2-METHYL-4H-PYRAN-3-CARBOXYLATE;Ethyl 6-amino-5-cyano-4-(2,3-dihydro-1-benzofuran-5-yl)-2-methyl-4H-pyran-3-carboxyl
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