Cc1cccc(NC(=O)CCS(=O)(=O)c2cc(Br)cc3c2N(C(=O)C2CC2)CC3)c1C
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?