CC1CNC(c2cccc(-c3nc(-c4cccc(C5=NC(C)CN5)c4)nc(N(C)C)n3)c2)=N1.Cl
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?