O=C1CC(C(=O)N2CCN(S(=O)(=O)c3cccc(F)c3)CC2)CN1Cc1ccccc1Cl
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?