Internal coordinates for the g'G'g conformer

 H
 O                  1              B1
 C                  2              B2    1              A1
 C                  3              B3    2              A2    1              D1
 O                  4              B4    3              A3    2              D2
 H                  5              B5    4              A4    3              D3
 C                  4              B6    3              A5    2              D4
 H                  3              B7    2              A6    1              D5
 H                  3              B8    2              A7    1              D6
 H                  4              B9    3              A8    2              D7
 H                  7             B10    4              A9    3              D8
 H                  7             B11    4             A10    3              D9
 H                  7             B12    4             A11    3             D10

   B1             0.96330000
   B2             1.42990000
   B3             1.51630000
   B4             1.42190000
   B5             0.96710000
   B6             1.51180000
   B7             1.09320000
   B8             1.08960000
   B9             1.09930000
   B10            1.08990000
   B11            1.08810000
   B12            1.08960000
   A1           108.10000000
   A2           111.00000000
   A3           109.60000000
   A4           106.10000000
   A5           111.80000000
   A6           111.30000000
   A7           105.60000000
   A8           108.40000000
   A9           110.80000000
   A10          110.00000000
   A11          109.90000000
   D1           -75.10000000
   D2           -54.80000000
   D3            41.60000000
   D4          -174.30000000
   D5            48.60000000
   D6           166.70000000
   D7            64.80000000
   D8           -62.10000000
   D9           177.80000000
   D10           58.50000000