O=C(NCc1cccnc1)[C@H]1[C@@H]2CC[C@@H](O2)[C@@H]1C(=O)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?