COC(=O)C[C@@H]1C(C)(C)[C@@H]2O[C@@]34C[C@@H]2C(=O)[C@]1(C)[C@H]3CC[C@@]1(C)[C@H](c2ccoc2)OC(=O)C[C@]14O
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?