CC(=O)O[C@H]1CC[C@@]2(C)C(CC[C@]3(C)C2CC[C@]2(C)Oc4c(C)cc(O)cc4C[C@@H]23)C1(C)C
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?