COc1ccccc1-c1ccc(O[C@@H]2OC(C)(C)[C@H](OC)[C@@H](O)[C@H]2O)cc1C(=O)NCc1ccccc1
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?