COC(=O)c1c(C)ccc2c(O)c3c(cc12)C(=O)c1c2c(cc(O)c1C3=O)[C@@]1(C)O[C@@](C)(O2)[C@@H](O)[C@H](N(C)C)[C@H]1O
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?