CC1(C)CNC(c2ccc3c(c2)Cc2cc(C4=NC(C)(C)CN4)ccc2-3)=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?