CCN1C(C)=C(C(=O)OC)C(c2ccccc2)N2C(=O)[C@](O)(C(=O)OC)C(c3ccccc3)C(C(=O)c3ccccc3)=C12
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?