structural elucidation problems

5:49

2:11

3:56

9:48

20:26

50:52

5:36

1:00:02

16:31

1:07:29

1:15:14

6:32

1:37:07

12:54

کوتاه

56:03

7:27

20:09

16:09

کوتاه

19:05

1:22

6:09

5:51

33:34

6:59

1:01:46

2:32

3:22

44:47

کوتاه

21:08

کوتاه

5:34

39:48

7:10

کوتاه

9:20

1:16

24:20