C[C@@]12C(=O)N(c3cccc(Cl)c3)C(=O)N1[C@H](c1ccc(Cl)cc1)[C@@H]1C(=O)N(C3CCCCC3)C(=O)[C@@H]12
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?