O=C1Nc2c(c(=O)[nH]c(=O)n2-c2ccc(Cl)cc2)C1(NS(=O)(=O)c1ccccc1)C(F)(F)F
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?