CC(=O)O[C@H]1CC[C@]2(C)C(=CC[C@@H]3[C@@H]2CC[C@]2(C)[C@@H]3C[C@H]3O[C@]4(CC[C@H](C)CN4)[C@H](C)[C@@H]32)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?