CC1(C)S[C@H]2C(NC(=O)[C@@H](N)c3ccc(O)cc3)C(=O)N2[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?