OC1(C(Sc2cc(C(F)(F)F)cc(C(F)(F)F)c2)Sc2cc(C(F)(F)F)cc(C(F)(F)F)c2)C=CCCC1
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?