CCN1C(=O)[C@@H]2[C@@H](CC[C@@H]3C(=O)C=C[C@@H](O)[C@H]32)C1=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?