CC1CCc2cc(F)ccc2N1C(=O)CSc1n[nH]c2c3cc(F)ccc3nc-2n1
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?