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?? ???? >3-[7,9-Dihydro-2,6-dimethyl-5-methoxy-9-oxo-2H-furo[3,4-h]-1-benzopyran-2-yl]propionic acid
3-[7,9-Dihydro-2,6-dimethyl-5-methoxy-9-oxo-2H-furo[3,4-h]-1-benzopyran-2-yl]propionic acid
3-[7,9-Dihydro-2,6-dimethyl-5-methoxy-9-oxo-2H-furo[3,4-h]-1-benzopyran-2-yl]propionic acid ??
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3-[7,9-Dihydro-2,6-dimethyl-5-methoxy-9-oxo-2H-furo[3,4-h]-1-benzopyran-2-yl]propionic acid C??? ??, ??, ??
3-[7,9-Dihydro-2,6-dimethyl-5-methoxy-9-oxo-2H-furo[3,4-h]-1-benzopyran-2-yl]propionic acid ?? ?? ? ???
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3-[7,9-Dihydro-2,6-dimethyl-5-methoxy-9-oxo-2H-furo[3,4-h]-1-benzopyran-2-yl]propionic acid ?? ??
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