COC(=O)[C@@]1(Cc2ccc(OC)cc2)[C@H]2c3cc(C(=O)N4CCCC4)n(CCc4ccccn4)c3C[C@H]2CN1C(=O)c1ccccc1
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?