Cc1cc(S(=O)(=O)NC(=C(C#N)C#N)[n+]2ccc(N(C)C)cc2)c([S-])cc1Cl
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?