CN(C)C(=O)[C@]1(C)C[C@H]1[C@H](NC(=O)CNC(=O)[C@@H]1CCCN1C(=O)[C@]1(C)C[C@H]1[C@H](NC(=O)OCc1ccccc1)c1ccccc1)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?