Cl.N[C@@H](Cc1c[nH]c2ccccc12)c1nnc(SCc2c(F)cccc2Cl)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?