CO[C@H]1[C@@H](O)CC(OC2[C@@H](O)CC(OC3[C@@H](O)C[C@H](OC4CC[C@@]5(C)C(CCC6C5CC(O)[C@]5(C)[C@H](C7=CC(=O)OC7)CCC65O)C4)O[C@@H]3C)O[C@@H]2C)O[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?