CC(C)N(Cc1nnc(-c2ccccc2Br)o1)C(=O)c1cc(Cl)nc2ccccc12
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?