CC1(C)CC(=O)C(C(c2cc([N+](=O)[O-])ccc2Cl)C2C(=O)CC(C)(C)CC2=O)C(=O)C1
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?