Cc1cc(NC(=O)COC(=O)c2ccc(Cl)c(S(N)(=O)=O)c2)c([N+](=O)[O-])cc1C
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?