O=C(Nc1cccc(C(F)(F)F)c1)C(=O)C(C(=O)c1ccc(Cl)c(Cl)c1)C1OC(=O)c2ccccc21
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?