Nc1ccc(Oc2ccc(C34CC5CC(C3)CC(c3ccc(Oc6ccc(N)cc6C(F)(F)F)cc3)(C5)C4)cc2)c(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?