CC1=NN(C(=O)c2ccncc2)C(=O)[C@@H]1/N=N\c1ccc2ccccc2c1
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?