Cc1nn(CN2CCN(C)CC2)c(=S)n1/N=C/c1ccc(-c2ccc(Cl)cc2Cl)o1
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?