CC(=O)N1[C@@H]2CC3C4CC=C5C[C@@H](O)CC[C@]5(C)C4CC[C@]3(C)[C@@]21C(C)=O
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?