,
-
""
(
25
50
75
100
125
150
175
200
225
250
)
1
...
52
53
54
55
56
57
58
59
60
61
62
63
64
...
70
, Si- n-()
1- -β- [5,4-b]
,
-
β-D-
-
8 SP2-
, -
5.
N- . , -
1
...
52
53
54
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56
57
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62
63
64
...
70