COC(=O)C1=C(O)C(C(=O)OC)[C@]2(O)[C@H](C(=O)OC)[C@H]1C[C@@H](c1ccc(Cl)cc1)[C@H]2C(=O)OC
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?