CC12CCC(=O)N1C(C(=O)N1CCN(S(=O)(=O)c3ccc(Br)cc3Cl)CC1)CS2
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?