CO[C@@H]1C[C@@H](C[C@H]2CC[C@H](C)[C@@H]([C@@H](C)C(=O)O)O2)O[C@]2(O[C@](C)([C@H]3CC[C@@](C)(C4OC([C@H]5O[C@@](O)(CO)[C@H](C)C[C@@H]5C)C[C@@H]4C)O3)C[C@H]2C)[C@@H]1C
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?