CC(C)[C@H](N)C(=O)NC[C@H](CC(=O)NC[C@H]1CC[C@H](C(=O)O)CC1)c1ccc(Cl)cc1.Cl
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?