CC(=O)OC[C@@H]1O[C@@H](O/N=C2/C[C@@H](O)[C@@H](O)[C@H]3[C@@H]2CC[C@@H]2C(=O)N(C[C@@H]4CCCO4)C(=O)[C@H]23)[C@H](OC(C)=O)[C@H](OC(C)=O)[C@@H]1OC(C)=O
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?