C=C1C2CC[C@@]3(C)C(c4ccoc4)OC(=O)C[C@@]13OC1CC(=O)C(C)(C)C(CC(=O)OC)[C@]12C
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?