CCN1C=C/C(=C/c2sc3ccccc3[n+]2CCCS(=O)(=O)[O-])c2ccccc21
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?