C=C1C(=O)O[C@H]2C1[C@H](OC(=O)/C(C)=C\COC(C)=O)C[C@]1(CO1)[C@@H]1[C@H](O)[C@H]3O[C@@]3(C)[C@H]21
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?