COc1cccc(NC(=O)CC(=O)n2nc(-c3ccccc3)c(/N=N/c3ccc(Cl)cc3)c2-c2ccccc2)c1
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?