CCN1CCN(C2=C(NS(=O)(=O)c3ccc(Br)cc3)C(=O)c3ccccc3C2=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?