O=C(CC(O)(C(F)(F)F)C(F)(F)F)c1cc(CC(=O)C(O)(C(F)(F)F)C(F)(F)F)cc(CC(=O)C(O)(C(F)(F)F)C(F)(F)F)c1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?