CC(=O)Oc1ccc2c(c1)CC[C@@H]1C2CC[C@]2(C)C(=O)NC(=O)CC12
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?