3-[5,9-dimethyl-7-oxo-3-(4-pyrrolidin-1-ylphenyl)furo[3,2-g]chromen-6-yl]propanoic acid C??? ??, ??, ??

3-[5,9-dimethyl-7-oxo-3-(4-pyrrolidin-1-ylphenyl)furo[3,2-g]chromen-6-yl]propanoic acid ?? ?? ? ???

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3-[5,9-dimethyl-7-oxo-3-(4-pyrrolidin-1-ylphenyl)furo[3,2-g]chromen-6-yl]propanoic acid ?? ??