O=C1C(/C=C/c2ccc(Cl)cc2)=NNC2N1N=C1NC(=O)C3(NN12)c1ccccc1-c1ccccc13
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?