C[C@@H]1C[C@@H]2OC(=O)[C@]3(C)[C@H]2[C@@H](OC3(C)O)[C@]2(C)C(=O)C=C[C@H]12
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?