COc1ccc(/C=C2\CC3C4CC=C5C[C@@H](N6CCCC6)CC[C@]5(C)C4CC[C@]3(C)[C@H]2O)cc1OC
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?