COc1ccc(-c2ccc(O[C@@H]3OC(C)(C)[C@H](OC)[C@@H](O)[C@H]3O)cc2C(=O)NCCc2ccccc2)cc1
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?