O=C(c1ccccc1NS(=O)(=O)c1ccc([N+](=O)[O-])cc1[N+](=O)[O-])N1O[C@@H]2C=C[C@H]1C2
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?