C=C1C(=O)O[C@@H]2[C@H]1C[C@@H](O)[C@H](C)[C@@](O)(C(=O)/C=C/C)[C@H]2OC(=O)C(C)CC
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?