CC1(C)C=CC(=O)[C@]2(C)C1CC(=O)[C@]1(C)C2CC[C@@]2(C)C(c3ccoc3)OC(=O)C3OC321
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?