CC(=O)O[C@H]1CN(OCc2ccccc2)C[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?