ClCCCc1cn(C[C@H]2CC[C@@H]([C@@H]3CC[C@H](Cn4cc(CCCCl)nn4)O3)O2)nn1
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?