CC1CC[C@@]2(OC1)OC1CC3C4CC[C@H]5CC(O)CC[C@@]5(C)C4CC[C@]3(C)C1C2C
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?