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?? ???? >1-O-[28-Nor-17-(β-D-xylopyranosyloxycarbonyl)olean-12-en-3β-yl]-β-D-glucopyranuronic acid methyl ester
1-O-[28-Nor-17-(β-D-xylopyranosyloxycarbonyl)olean-12-en-3β-yl]-β-D-glucopyranuronic acid methyl ester
1-O-[28-Nor-17-(β-D-xylopyranosyloxycarbonyl)olean-12-en-3β-yl]-β-D-glucopyranuronic acid methyl ester ??
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1-O-[28-Nor-17-(β-D-xylopyranosyloxycarbonyl)olean-12-en-3β-yl]-β-D-glucopyranuronic acid methyl ester C??? ??, ??, ??
1-O-[28-Nor-17-(β-D-xylopyranosyloxycarbonyl)olean-12-en-3β-yl]-β-D-glucopyranuronic acid methyl ester ?? ?? ? ???
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1-O-[28-Nor-17-(β-D-xylopyranosyloxycarbonyl)olean-12-en-3β-yl]-β-D-glucopyranuronic acid methyl ester ?? ??
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