O=C1C(Cl)=C(N2CCN(c3ncccn3)CC2)C(=O)N1c1ccc(Cl)c(Cl)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?