CC(C(=O)Nc1ncc([N+](=O)[O-])s1)N1C(=O)c2ccccc2S1(=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?