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?? ???? >[(20S)-20-Carboxy-11-oxo-29,30-dinorolean-12-en-3β-yl]2-O-β-D-glucopyranuronosyl-α-D-glucopyranosiduronic acid
[(20S)-20-Carboxy-11-oxo-29,30-dinorolean-12-en-3β-yl]2-O-β-D-glucopyranuronosyl-α-D-glucopyranosiduronic acid
[(20S)-20-Carboxy-11-oxo-29,30-dinorolean-12-en-3β-yl]2-O-β-D-glucopyranuronosyl-α-D-glucopyranosiduronic acid ??
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[(20S)-20-Carboxy-11-oxo-29,30-dinorolean-12-en-3β-yl]2-O-β-D-glucopyranuronosyl-α-D-glucopyranosiduronic acid C??? ??, ??, ??
[(20S)-20-Carboxy-11-oxo-29,30-dinorolean-12-en-3β-yl]2-O-β-D-glucopyranuronosyl-α-D-glucopyranosiduronic acid ?? ?? ? ???
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[(20S)-20-Carboxy-11-oxo-29,30-dinorolean-12-en-3β-yl]2-O-β-D-glucopyranuronosyl-α-D-glucopyranosiduronic acid ?? ??
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