ClC(Cl)(Cl)C1=N[C@H]2[C@H](Br)[C@@H]3O[C@@H](c4ccccc4)[C@H](c4ccccc4)O[C@@H]3[C@H]2O1
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?