2-Amino-4-(3,4-dimethoxyphenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile;4H-1-Benzopyran-3-carbonitrile, 2-amino-4-(3,4-dimethoxyphenyl)-5,6,7,8-tetrahydro-7,7-dimethyl-5-oxo-
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