COc1ccc(NC(=O)[C@H]2O[C@@H]3OC(C)(C)O[C@@H]3[C@H]3OC(C)(C)O[C@@H]23)c(OC)c1
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?