COc1ccc(/C=C2\CC3C4CC=C5C[C@@H](O)CC[C@]5(C)C4CC[C@]3(C)C2=O)cc1OC
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?