NS(=O)(=O)c1ccc(N2C(=O)C3C4CC(C(Br)C4Br)C3C2=O)cc1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?