Cc1c(C(=O)C/C(=N/NC(=O)c2ccccc2)C(=O)Nc2ccc(Cl)cc2)[n+]([O-])c2ccccc2[n+]1[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?