CCOC(=O)c1ccc2c(c1)[n+](CCCS(=O)(=O)[O-])c(/C=C/c1ccc(Cl)cc1)n2CC
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?