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?? ???? >4-Hydroxy-α-[3-hydroxy-4-(4-hydroxyphenyl)-5-oxofuran-2(5H)-ylidene]benzeneacetic acid
4-Hydroxy-α-[3-hydroxy-4-(4-hydroxyphenyl)-5-oxofuran-2(5H)-ylidene]benzeneacetic acid
4-Hydroxy-α-[3-hydroxy-4-(4-hydroxyphenyl)-5-oxofuran-2(5H)-ylidene]benzeneacetic acid ??
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4-Hydroxy-α-[3-hydroxy-4-(4-hydroxyphenyl)-5-oxofuran-2(5H)-ylidene]benzeneacetic acid C??? ??, ??, ??
4-Hydroxy-α-[3-hydroxy-4-(4-hydroxyphenyl)-5-oxofuran-2(5H)-ylidene]benzeneacetic acid ?? ?? ? ???
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4-Hydroxy-α-[3-hydroxy-4-(4-hydroxyphenyl)-5-oxofuran-2(5H)-ylidene]benzeneacetic acid ?? ??
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