I am finding the same issue. In a molecule with 8 rotatable bonds, confab
identifies 2 and produces 3 conformers.
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Dear users: I am unsing Confab to screen bioactive conformers in a serie of
molecules bearing aromatic rings linked by rotatble bonds. I noticed that
Confab does not detect the whole set of rotatable bonds I expected to be
rotated.
The structure is shown below with the rotatable bond I expected
