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?? ???? >3α-(Acetyloxy)-16β-hydroxy-23-oxo-5α-lanosta-8,24-diene-21,30-dioic acid 21,16-lactone
3α-(Acetyloxy)-16β-hydroxy-23-oxo-5α-lanosta-8,24-diene-21,30-dioic acid 21,16-lactone
3α-(Acetyloxy)-16β-hydroxy-23-oxo-5α-lanosta-8,24-diene-21,30-dioic acid 21,16-lactone ??
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3α-(Acetyloxy)-16β-hydroxy-23-oxo-5α-lanosta-8,24-diene-21,30-dioic acid 21,16-lactone C??? ??, ??, ??
3α-(Acetyloxy)-16β-hydroxy-23-oxo-5α-lanosta-8,24-diene-21,30-dioic acid 21,16-lactone ?? ?? ? ???
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3α-(Acetyloxy)-16β-hydroxy-23-oxo-5α-lanosta-8,24-diene-21,30-dioic acid 21,16-lactone ?? ??
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